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Factorisation by Regrouping Terms

Factories. x...

Question

Factories.
$x^{2} + x y + 8 x + 8 y$

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Solution

The sum is,

$+ x y + 8 x + 8 y = 0$

$x (x + y) + 8 (x + y) = 0$

Therefore the factor is,

$(x + y) (x + 8) = 0$

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x^{2} + x y + 8 x + 8 y

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