Question

x² +3x-6=-8 equação do 2 grau

Answer 1

x² + 3x - 6 + 8 = 0
x² + 3x  + 2 = 0
Δ = 3² - 4.1.2    a=1 b=3 c=2
Δ = 9 - 8
Δ = 1
X1 = -3 + √Δ / 2 . 1
X1 = -3 + √1 / 2
X1 = -3 + 1 / 2
X1 = -2 / 2
X1 = -1

X2 = -3 - 1 / 2
X2 = -4 / 2
X2 = -2