Question

Factorize 2y^2-2y-4​

Answer 1

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• Factorise $\sf2 {y}^{2} - 2y - 4$

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$\sf2 {y}^{2} - 2y - 4$

$\sf = 2 ({y}^{2} - y - 2)$

$\sf = 2( {y}^{2} - 2y + y - 2)$

$\sf = 2(y(y - 2) + 1(y - 2))$

$\sf = 2(y+ 1)(y - 2)$

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• $\sf2(y+ 1)(y - 2)$