Question

factorise (a+b)^2-(x-y)^2​

Answer 1

Answer:

$(a + b) {}^{2} - (x - y) {}^{2} \: \: \: \: \\ \: \: \: \: a { }^{2} - b {}^{2} = (a - b)(a + b) \\ (a + b) - (x - y)(a + b) + (x - y) \\( a + b - x + y)(a + b + x - y)$

Thank you

Answer 2

Answer:

a2−b2=(a+b)(a−b)a2-b2=(a+b)(a-b) where a=x+ya=x+y and b=x−yb=x-y.

(x+y+x−y)(x+y−(x−y))