Question

solve 5x²+7x+2=0 by factroization​

Answer 1

$5 {x}^{2} + 7x + 2 = 0 \\ \\ = > 5 {x}^{2} + 5x + 2x + 2 = 0 \\ \\ = > 5x(x + 1) + 2(x + 1) = 0 \\ \\ = > (x + 1)(5x + 2) = 0 \\ \\ = > x = - 1 \: \: and \: \: - \frac{2}{5}$