Question

please answer this question with a detailed explanation​

Answer 1

$\huge{\mathcal{\blue{\underline{Answer}}}}$

$= x {}^{8} - y {}^{8} \\ = (x {}^{4} ) {}^{2} - (y { }^{4} ) {}^{2} \\ = ( {x}^{4} + y { }^{4} )(x {}^{4} - y {}^{4})$