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Factorisation of Quadratic Polynomials- Middle Term Splitting

Factorise: x2...

Question

Factorise:
$x^{2} + 7 x - 98$

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Solution

$x^{2} + 7 x - 98 = x^{2} + 14 x - 7 x - 98 = x (x + 14) - 7 (x + 14)$

$= (x + 14) (x - 7)$

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Factorisation of Quadratic Polynomials- Middle Term Splitting

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