![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(125:5^x+5^2=26\)
\(\Rightarrow125:5^x+25=26\)
\(\Rightarrow125:5^x=26-25\)
\(\Rightarrow125:5^x=1\)
\(\Rightarrow5^x=125:1\)
\(\Rightarrow5^x=125\)
\(\Rightarrow5^x=5^3\)
\(\Rightarrow x=3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : 125 : 5x = 5
=> 5x = 125 : 5 => 5x = 25
=> 5x = 52 => x = 2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(15-5x\right)^3=-125\)
\(\Rightarrow\left(15-3x\right)^3=\left(-5\right)^3\)
\(\Rightarrow15-3x=-5\)
\(\Rightarrow3x=20\)
\(\Rightarrow x=\frac{20}{3}\)
Vậy\(x=\frac{20}{3}\)
\(\left(15-5x\right)^3=-125\)
=> \(\left[5\left(3-x\right)\right]^3=\left(-5\right)^3\)
=> \(5\left(3-x\right)=-5\)
=> \(3-x=-1\)
=> \(x=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
10 : (-125) = 8 : (-5x)
-2/25 = 8/-5x
=> -2.(-5x) = 25.8
=> 10x= 200
=> x= 200:10
x= 20
Vậy...
![](https://rs.olm.vn/images/avt/0.png?1311)
x là 25 nha bn
Vì ta lấy 125 : 5 bằng 25
k nhé
thanks nhju chúc bn học tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1560:\left[5.79-\left(125+5.49\right)+5.21\right]=1560:\left[395-370+105\right]\)
\(=1560:130\)
\(=12\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) x = 4
b) x = 5
c) x = 2
d) x = 2
e, x = 1
f, x = 0 hoặc x = 1
5x = 125
x = 125 : 5
x = 25
Vậy x = 25
x = 25