Question

suntract:
$1 - {a}^{4} from {a }^{2} - 2ab -3 {a}^{3}$

Answer 1

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Answer 2

$\bold\pink{\boxed{Solution}}$

$\bold{ = {a}^{2} - 2ab - 3 {a}^{3} - (1 - {a}^{4} )} \\ \\ \bold{= {a}^{2} - 2ab - 3 {a}^{3} - 1 + {a}^{4} }$