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a) \(\left(\frac{1}{2}\right)^m=\frac{1}{32}\)
\(=>\left(\frac{1}{2}\right)^m=\frac{1^5}{2^5}\)
\(=>\left(\frac{1}{2}\right)^m=\left(\frac{1}{2}\right)^5\)
\(=>m=5\)
b) \(\frac{343}{125}=\left(\frac{7}{5}\right)^n\)
\(=>\frac{7^3}{5^3}=\left(\frac{7}{5}\right)^n\)
\(=>\left(\frac{7}{5}\right)^3=\left(\frac{7}{5}\right)^n\)
\(=>n=3\)
a) \(\left(\frac{1}{2}\right)^m=\frac{1}{32}\)
\(\Rightarrow\left(\frac{1}{2}\right)^m=\left(\frac{1}{2}\right)^5\)
=> m =5
b) \(\frac{343}{125}=\left(\frac{7}{5}\right)^n\)
\(\Rightarrow\left(\frac{7}{5}\right)^3=\left(\frac{7}{5}\right)^n\)
=> n = 3
(1/2)^m = 1/32
mà 1/32 = (1/2)^5 nên m = 5
343/125= (7/5)^n
mà 343/125 = (7/5)^3 nên n=3
a, ( 1/2 ) ^ m = ( 1/2) ^5
=> m = 5
b, ( 7/5) ^n = 343 / 125
=> ( 7/5)^n = (7/5) ^ 3
=> n = 3
Đúng cho tui nha
\(a.\left(\frac{1}{2}\right)^m=\frac{1}{32}\)
\(\left(\frac{1}{2}\right)^m=\frac{1^5}{2^5}\)
\(\left(\frac{1}{2}\right)^m=\left(\frac{1}{2}\right)^5\)
=>m=5
\(b.\frac{343}{125}=\left(\frac{7}{5}\right)^n\)
\(\frac{7^3}{5^3}=\left(\frac{7}{5}\right)^n\)
\(\left(\frac{7}{5}\right)^3=\left(\frac{7}{5}\right)^n\)
=>n=3
a) \(\left(\frac{1}{2}\right)^m=\frac{1}{32}\)
\(\Rightarrow\left(\frac{1}{2}\right)^m=\left(\frac{1}{2}\right)^5\)
=> m = 5
Vậy m = 5
b) \(\frac{343}{125}=\left(\frac{7}{5}\right)^n\)
\(\Rightarrow\left(\frac{7}{5}\right)^3=\left(\frac{7}{5}\right)^n\)
=> n = 3
Vậy n = 3
Fan Soobin Hoàng Sơn
=> m = 5
Vậy m = 5
b) 343125=(75)n
⇒(75)3=(75)n
=> n = 3
Vậy n = 3
a) \(\left(1:2\right)^m=1:32\Leftrightarrow\left(\frac{1}{2}\right)^m=\frac{1}{32}\Leftrightarrow\left(\frac{1}{2}\right)^m=\left(\frac{1}{2}\right)^5\Rightarrow m=5\)
b) \(343:125=\left(7:5\right)^n\Leftrightarrow\frac{343}{125}=\left(\frac{7}{5}\right)^n\Leftrightarrow\left(\frac{7}{5}\right)^3=\left(\frac{7}{5}\right)^n\Rightarrow n=3\)
a, \(\left(1:2\right)^m=1:32=\left(1:2\right)^5\Rightarrow m=5\)
b, \(343:125=\left(7:5\right)^n\Rightarrow\left(7:5\right)^3=\left(7:5\right)^n\Rightarrow n=3\)
\(\left(\frac{1}{2}\right)^m=\frac{1}{32}\)
\(=\frac{1^m}{2^m}=\frac{1}{32}\)
=> 2m = 32
<=> 32 = 25 = 2m
<=> m = 5
\(\frac{343}{125}=\left(\frac{7}{5}\right)^n\)
\(=\frac{343}{125}=\frac{7^n}{5^n}\)
=> 7n = 343 = 73 (1)
=> 5n = 125 = 53 (2)
Từ (1) và (2) <=> n = 3