Question

$a {}^{4} - b {}^{4}$
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Answer 1

Answer:

${a}^{4} - {b}^{4} \\ {( {a}^{2} )}^{2} - {( {b}^{2})}^{2} \\ ( {a}^{2} - {b}^{2} )( {a}^{2} + {b}^{2} ) \\ (a + b)(a - b)(a + b)(a + b) \\ 3(a + b)(a - b)$

Hope this will help u.......