Question

Calcule a equação: 2x² + 6x = 0

Answer 1

Resposta:

x1= -3     x2= 0

Explicação passo-a-passo:

Answer 2

$2x^2 + 6x = 0\\\\\frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\\ \\\frac{-6 \pm \sqrt{6^2 - 4*2*0} }{2*2}\\\\\frac{-6 \pm \sqrt{36} }{4}\\\\\frac{-6 \pm 6 }{4} \\\\\\x1: \frac{-6 + 6}{4} = 0\\\\x2: \frac{-6 - 6}{4} = \frac{-12}{4} = -3$