Question

Resolva a equação de 2°grau:
X²-x-12=0

Answer 1

X²-x-12=0
delta = (-1)^2 - 4.1.(-12)
delta = 1 + 48
delta = 49

x' = 1+7/2
x' = 8/2
x' = 4

x" = 1-7/2
x" = -6/2
x" = -3