Question

a(a-2)-b(b-2) factorise

Answer 1

Your answer is a squar add b squar

Answer 2

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