Question

x²+3x+2= qual o resultado e sua conta??

Answer 1

Δ = $3 ^{2} -4.1.2 = 9-8 =1$
$x'= \frac{-3+1}{2} = \frac{-2}{2} =-1$
$x''= \frac{-3-1}{2} = \frac{-4}{2} =-2$
S={-1,2}