Question
Factorise : $\frac{8 a^3}{27}-\frac{b^3}{8}$
✓
Answer
$\left(\frac{2 a}{3}-\frac{b}{2}\right)\left(\frac{4 a^2}{9}+\frac{a b}{3}+\frac{b^2}{4}\right)$
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