Question

factorise....................

Answer 1

I hope it is helpful.....

Answer 2

$3(x + y)^{2} - 10(x + y)(x - y) + 3(x - y)^{2}$

$= 3(x + y)^{2} - 9(x + y)(x - y) - (x + y)(x - y) + 3(x - y)^{2}$

$= 3(x + y)(x + y - 3(x - y)) - (x - y)(x + y - 3(x - y))$

$= (3x + 3y - x + y)(x + y - 3x + 3y)$

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

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

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