x^2=7
x2=7 x=±√7
Just take the square root of 7.
X^2=7
x^2=x*x
x*x=2x
2x=7
2x/2=7/2
x=3.5
Anima: NO!. The aquare root of 7=2.64575..............etc.
Just check it!: 3.5^2=12.25 2.64575^2=7