Đáp án:
`a)x³=8`
`⇒x=2`
`b)(2x+1)³=125`
`⇒(2x+1)³=5³`
`⇒(2x+1)=5`
`⇒2x=4`
`⇒x=2`
`c)(x-1)²=16`
`⇒(x-1)²=4²`
`⇒`\(\left[ \begin{array}{l}(x-1)=4\\(x-1)=-4\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x=5\\x=-5\end{array} \right.\)
`d)3^x=9²`
`⇒3^x=3^4`
`⇒x=4`
`e)10^x=2^5×5^5`
`⇒10^x=10^{10}`
`⇒x=10`
`g)9^{x-1}=9`
`⇒9^{x-1}=9^1`
`⇒x-1=1`
`⇒x=2`
