Respostas

2014-02-05T20:01:00-02:00
(x-6)²=2(x+18)
x²-12x+36 = 2x+36
x²-12x-2x+36-36
x²-14x = 0

Δ= (-14)²-4.1.0
Δ= 196

x = (-(-14) +/- √196) / 2.1
x= (14 +/- 14) / 2
x = 14 e 0
1 2 1