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Factorial

x2 + 7x + ...

Question

$x^{2}$ + $7 x$ + $10$ = $0$ , Solve.

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Solution

$x^{2} + 7 x + 10 = 0$
$x^{2} + 5 x + 2 x + 10 = 0$
$x (x + 5) + 2 (x + 5) = 0$
$(x + 5) (x + 2) = 0$
$x = - 2, - 5$

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