K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Các câu hỏi dưới đây có thể giống với câu hỏi trên
ND
Nguyễn Đức Trí
VIP
23 tháng 8 2023
a) \(4^n=4096\Rightarrow4^n=4^6\Rightarrow n=6\)
b) \(5^n=15625\Rightarrow5^n=5^6\Rightarrow n=6\)
c) \(6^{n+3}=216\Rightarrow6^{n+3}=6^3\Rightarrow n+3=3\Rightarrow n=0\)
d) \(x^2=x^3\Rightarrow x^3-x^2=0\Rightarrow x^2\left(x-1\right)=0\Rightarrow\left[{}\begin{matrix}x=0\\x-1=0\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)
e) \(3^{x-1}=27\Rightarrow3^{x-1}=3^3\Rightarrow x-1=3\Rightarrow x=4\)
f) \(3^{x+1}=9\Rightarrow3^{x+1}=3^2\Rightarrow x+1=2\Rightarrow x=1\)
g) \(6^{x+1}=36\Rightarrow6^{x+1}=6^2\Rightarrow x+1=2\Rightarrow x=1\)
h) \(3^{2x+1}=27\Rightarrow3^{2x+1}=3^3\Rightarrow2x+1=3\Rightarrow2x=2\Rightarrow x=1\)
i) \(x^{50}=x\Rightarrow x^{50}-x=0\Rightarrow x\left(x^{49}-1\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x^{49}-1=0\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}x=0\\x^{49}=1=1^{49}\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}x=0\\x=1\end{matrix}\right.\)
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
23 tháng 8 2023
4n = 4096
4n = 212
n = 12
5n = 15625
5n = 56
n = 6
6n+3 = 216
6n+3 = 23.33
6n+3 = 63
n + 3 = 3
S
0
5 tháng 9 2019
b. 1404 : [118 - (4x + 6)] = 27
118 - (4x + 6) = 52
4x + 6 = 66
4x = 60
x = 15
5 tháng 9 2019
d) \(5x^2-3x=0\)
\(\Leftrightarrow x\left(5x-3\right)=0\)
\(\Leftrightarrow\orbr{\begin{cases}x=0\\5x-3=0\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=0\\x=\frac{3}{5}\end{cases}}\)
e) \(3\left(x-1\right)+4\left(x-1\right)^2=0\)
\(\Leftrightarrow\left(x-1\right)\left[3-4.\left(x-1\right)\right]=0\)
\(\Leftrightarrow\orbr{\begin{cases}x-1=0\\3-4\left(x-1\right)=0\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=1\\4\left(x-1\right)=3\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=1\\x-1=\frac{3}{4}\Rightarrow x=\frac{7}{4}\end{cases}}\)
f) \(2\left(x-2\right)^2=\left(x-2\right)\)
\(\Leftrightarrow\orbr{\begin{cases}x-2=0\\2\left(x-2\right)-1=0\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=2\\x-2=\frac{1}{2}\Rightarrow x=\frac{5}{2}\end{cases}}\)
g) \(\left(x-2020\right)^4=\left(x-2020\right)^2\)
\(\Leftrightarrow\orbr{\begin{cases}\left(x-2020\right)^2=0\\\left(x-2020\right)^2-1=0\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=2020\\x=2019,x=2021\end{cases}}\)
ND
Nguyễn Đức Trí
VIP
27 tháng 8 2023
Bài 1 :
\(M=\dfrac{30-2^{20}}{2^{18}}=\dfrac{2.15-2^{20}}{2^{18}}=\dfrac{15}{2^{17}}-2^2=\dfrac{15}{2^{17}}-4< 0\left(\dfrac{15}{2^{17}}< 1\right)\)
\(N=\dfrac{3^5}{1^{2021}+2^3}=\dfrac{3^5}{9}=\dfrac{3^5}{3^2}=3^3=27\)
\(\Rightarrow M< N\)
ND
Nguyễn Đức Trí
VIP
27 tháng 8 2023
Bài 3 :
a) \(t^2+5t-8\) khi \(t=2\)
\(=5^2+2.5-8\)
\(=25+10-8\)
\(=27\)
b) \(\left(a+b\right)^2-\left(b-a\right)^3+2021\left(1\right)\)
\(\left\{{}\begin{matrix}a=5\\b=a+1=6\end{matrix}\right.\) \(\Rightarrow\left\{{}\begin{matrix}a+b=11\\b-a=1\end{matrix}\right.\)
\(\left(1\right)=11^2-1^3+2021=121-1+2021=2141\)
c) \(x^3-3x^2y+3xy^2-y^3=\left(x-y\right)^3\left(1\right)\)
\(\left\{{}\begin{matrix}x=3\\y=2\end{matrix}\right.\) \(\Rightarrow x-y=1\)
\(\left(1\right)=1^3=1\)
L
1
HH
2
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
5 tháng 8 2023
Để olm giúp em nhá
(9989)69 = 996141 = (992)3070.99 = (\(\overline{..01}\))3070.99 = \(\overline{..99}\)
62021 = (65)404.6 = 7776404.6 = \(\overline{...76}.6\) = \(\overline{...56}\)
A=142022.162022=(14.16)2022=2242022= (2242)1001= \(\overline{...76}\)1001=\(\overline{...76}\)
02128
sdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfjsdfsdfsdfsdsdfsdfsfgtjzkdpofhjzdghjigfnionjghniodidejfgoikjedrfioukhgydt guye9hrtt9ttttttttfttgtyhv978urswea nbtw2aghfghfghghfghhgjfj