Question

$( \frac{1}{7} x - \frac{1}{8} y)(7 {x}^{2} - 8 {y}^{2} )$
pls help​

Answer 1

Step-by-step explanation:

$( \frac{1}{7}x - \frac{1}{8} y)(7 {x}^{2} - 8 {y}^{2} ) \\ \\ = {x}^{3} - \frac{8}{7}x {y}^{2} - \frac{7}{8} {x}^{2} y + {y}^{3} \\ \\ = {x}^{3} + {y}^{3} - ( \frac{8}{7} x {y}^{2} + \frac{7}{8} {x}^{2} y). \\ \\ hope \: it \: will \: help \: u \: dear...$

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