Question

Factorise x^2 -1 - 2a - a^2

Answer 1

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${x}^{2} - 1 - 2a - {a}^{2}$

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$➩ {x}^{2} - 1 - 2a - {a}^{2}$

$➩( {x}^{2} - {1}^{2} ) - a(2 + a)$

$➩( x + 1)(x - 1) - a(a + 2)$

Hope it helps you..!!!

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