Question

faction a power 4 -b power 4​

Answer 1

$= \frac{ {a}^{4} }{ - {b}^{4} }$

$= {a}^{2} {( - b)}^{2} ( \frac{ {a}^{2} }{ - {b}^{2} } )$

$= \frac{ {a}^{2} }{ - {b}^{2} }$