Question

resolva a equação não expressas na forma geral :

x(3x + 4) = -1

Answer 1

x(3x+4)=-1

$3 x^{2} +4x+1=0$

a=3
b=4
c=1
Δ=b²-4ac
Δ=16-12
Δ=4
√Δ=√4
√4= ± 2

x=(-b ±√Δ)/2a

$x'= \frac{-4+2}{6} =- \frac{2}{6} =- \frac{1}{3}$

$x"= \frac{-4-2}{6} =- \frac{6}{6} =-1$

S={-11/3,-1}