Thank you for pointing that out! Let's carefully recheck both calculations to find the mistake.

### Expression 1:
\[
\left(\frac{-2}{5}\right)^2
\]

This means squaring the fraction \(\frac{-2}{5}\):

\[
\left(\frac{-2}{5}\right)^2 = \frac{(-2)^2}{5^2} = \frac{4}{25}
\]

This answer is correct: \(\frac{4}{25}\).

### Expression 2:
\[
\left(\frac{-3}{5}\right)^3
\]

Cubing the fraction \(\frac{-3}{5}\):

\[
\left(\frac{-3}{5}\right)^3 = \frac{(-3)^3}{5^3} = \frac{-27}{125}
\]

This answer is also correct: \(\frac{-27}{125}\).

Both calculations are correct according to the usual mathematical rules. Could you clarify which one seems incorrect or if there might be specific conditions (such as not using negative fractions)?

Explore the calculations involving exponentiation of negative fractions. This page explains how to square -2/5 and cube -3/5 with step-by-step solutions. Suitable for Grades 7-9 learners.

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