Question

Write the expressions as an equivalent power with a negative exponent. 1/49 and 27/125

Answer 1

`n^(-x)=\frac1{n^x}`


`\textcircled1\ \frac1{49}=\frac1{7^2}=\boxed{7^(-2)}`


`\textcircled2\ (27)/(125)=(3^3)/(5^3)=(\frac35)^3=\frac1{((5)/(3))^3}=\boxed{\left(\frac53\right)^(-3)}`