Question

determine aa raizes das equacoes utilizando a forma resolvidas
x²+ 5x -2= -8

Answer 1

Δ=b²-4.a.c
Δ=5²-4.1.6
Δ=25-24
Δ=1

x=-b≈√Δ/2.a

X=-5≈√1/2.1
X=-5≈1/2

X1=-5+1/2=-4/2=-2

X2=-5-1/2=-6/2=-3

S=[-2,-3]