Question

$2x { }^{2} + 5x + 2 = 0$
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Answer 1

$2x ^{2} + 4x + x + 2 = 0 \\ 2x(x + 2) + x + 2 = 0 \\ (x + 2)(2x + 1) = 0 \\ \\ x + 2 = 0 \\ 2x + 1 = 0 \\ \\ x = - 2 \\ x = - \frac{1}{2}$