Question

f (×)=(1/2)x (ao quadrado) + 6 x

Answer 1

F(x) = x^2/2 + 6x
0 = x^2/2 + 6x
0/2 = ( x^2 + 2.6x)/2
0 = x^2 + 12x
x^2 + 12x = 0
x.(x+12) = 0
x = 0
x +12=0
x = - 12

R.: (0, - 12)