Question

Find the roots of the equation x2 +6x + 8 = 0.

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Answer 1

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) = 0

(x + 2)(x + 4) = 0

x + 2 = 0 or x + 4 = 0

x = - 2 or x = - 4