SOLUTION: non perfect square: 10=x^2+2+x*x I have this: 10-2=3x^2 8=2x^2 (divide both sides by 2) 4=x^2 2=x

Algebra ->  Square-cubic-other-roots -> SOLUTION: non perfect square: 10=x^2+2+x*x I have this: 10-2=3x^2 8=2x^2 (divide both sides by 2) 4=x^2 2=x      Log On


   

Question 550653: non perfect square: 10=x^2+2+x*x
I have this: 10-2=3x^2
8=2x^2 (divide both sides by 2)
4=x^2
2=x
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
10=x^2+2+x*x

10=2x^2+2

10-2=2x^2

8=2x^2

8/2=x^2

4=x^2

x^2=4

x=+-sqrt(4)

x=2 or x=-2