Question

qual o valor x2+3×+2=0 2 grau​

Answer 1

∆ = 3² - 4.1.2

∆ = 9 - 8

∆ = 1

$x = \frac{ - 3 + - \sqrt{1} }{2 \times 1}$

$x = \frac{ - 3 + - 1}{2}$

$x = \frac{ - 3 + 1}{2} = - 1 \\ x = \frac{ - 3 - 1}{2} = - 2$