Respostas

2014-09-04T12:54:42-03:00
(x+2)² =(2√3-x)²
x²+4x+4=4(3x-2)
x²+4x+4=12x-8
x²-8x+12=0

Δ=(-8)²-4.1.12
Δ=64-48
Δ=16

x=8-4/2
x=2

x=8+4/2
x=6