Question

ab² + (a-b)b-1 factorise

Answer 1

the question can be solved as stated in the picture, you can create

Answer 2

Solution ●●●●
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$= {ab}^{2} + ab - {b}^{2} - 1 \\ \\ = {ab}^{2} - {b}^{2} + ab - 1$

$= {b}^{2} (ab - 1) + 1(ab - 1) \\ \\ = (ab - 1)( {b}^{2} + 1)$
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I hope it will help you
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