Question

(x-1) (x-2) =6 Me Ajudem!! pfv<3

Answer 1

X² - 2x - x+ 2 = 6
x² - 3x + 2 - 6 = 0
x² - 3x - 4 = 0
a = 1 b = -3 c = -4
Δ= b² - 4ac
Δ= (-3)² - 4 (1) (-4)
Δ 9 + 16
Δ 25

Answer 2

(x-1) (x-2) =6
x²-2x-x+2=6
x²-3x-4=0
∆=(-3)²-4(-4)
∆=9+16
∆=25
√25=5
x½=3±5/2
x'=3+5/2=8÷2=4
x''=3-5/2=-2÷2=-1