Question

2x ao quadrado -2=0
resolver 

Answer 1

$2 x^{2} -2=0\\ \\ 2 x^{2} =2\\ \\ x^{2} =1\\ \\ x=\pm 1$

Answer 2

2x²-2=0
2x²=0+2
2x²=2
x²=2/2
x²=1