Question

factorise(x-2y)(x-2y) +4x-8y​

Answer 1

x square - 2xy - 2xy + 4y square + 4x - 8y

(x square - 4xy + 4y square) + 4x - 8y

(x-2y) square + 4 (x-2y)

factor out x-2y from the expression

(x-2y)(x-2y+4)