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Factorisation of Quadratic Polynomials- Middle Term Splitting

Factorise: 2x...

Question

Factorise:
$2 x^{2} + 3 x - 90$

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Solution

$2 x^{2} + 3 x - 90 = 2 x^{2} + 15 x - 12 x - 90 = x (2 x + 15) - 6 (2 x + 15) = (x - 6) (2 x + 15)$

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Factorisation of Quadratic Polynomials- Middle Term Splitting

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