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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Similar questions

Factorise:
$x^{2} - 7 x - 30$

Factorise:

$x^{2} + \frac{1}{4 x^{2}} + 1 - 7 x - \frac{7}{2 x}$

x^{2} + 7 x - 98 = 0

49^{x} + 7^{x + 1} - 98 < 0

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