Respostas

2014-07-30T06:56:14-03:00
(√2+3-√x-1)²=(√x-2)²
2x+3-√x-1=x-2
-√x-1=x-2x-2-3
-√x+1=-x-5
-x-x+1+5
-2x+6
-2x=6
x=6/2
x=3
substituindo x por 3
√2x+3-√x+1=√x-2
√2.3+3-√3+1=√3-2
√9-√4=√1
3-2=1
1=1
1-1=0