Question

factorise - (a+b)2 - a² +b²​

Answer 1

Answer:

(a+b)^2-a^2+b^2,

=(a+b)^2+(b^2-a^2),

=(a+b)^2+(b+a)(b-a),

=(a+b)[(a+b)+(b-a)],

=(a+b)(2b)

Answer 2

-(a+b) 2 - a²+b²

=(a+b)²-a²+b²

=(a+b)²+(b²-a²)

=(a+b)²+(b+a)(b-a)

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

=(a+b)(2b)