Question

determine as raizes
a) x²=6x+8= 0

b)2x²-2x-12=0

Answer 1

a) x² - 6x + 8 = 0

Fatorando

(x - 4)(x - 2) = 0

x - 4 = 0 x1 = 4

x - 2 = 0 x2 = 2

S = {2, 4}