Question

Factorise: a-b-a²+b²​

Answer 1

Step-by-step explanation:

= a-b-a²+b²

=(a-b)-(a²-b²)

=(a-b)-(a-b)(a+b)

=(a-b) [1-(a+b)

Answer 2

$\huge \underline { Answer✿°᭄}$

$a - b - {a}^{2} + {b}^{2} \\ \\ ⇒ \: (a - b)( {a}^{2} - {b}^{2} ) \\ \\ ⇒ \: (a - b) - (a -b )(a +b ) \\ \\ ⇒ \: (a - b)[1 - ( a+b )]$

$\huge \underline{Hope \: it \: Helps \: u}$