Question

Simplify (x-2/5y)^3-(x+2/5y)^3

Answer 1

$( \frac{x - 2}{5y} )^{3} - (\frac{x + 2}{5y} ) {}^{3}$
we know that a³-b³=(a-b)³ + 3a²b -3ab²
according to question
answer is in picture.
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