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Quadratic Equations

Solve : x2+8...

Question

Solve :
$x^{2} + 8 x + 15 = 0$

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Solution

$x^{2} + 8 x + 15 = 0$
$x^{2} + 3 x + 5 x + 15 = 0$
$x (x + 3) + 5 (x + 3) = 0$
$(x + 3) (x + 5) = 0$
$x = - 3, - 5$

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Similar questions

x^{2} - 8 x + 15 = 0

x^{2} + 8 x + 15 = 0

by method of completing square.

x^{2} - 8 x + 15 = 0

by completing a square method.

x^{2} - 8 x + 5 = 0

Solve the following quadratic equation: $x^{2} + 8 x + 15 = 0$

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