Question

Solve Using Square Roots
x^2-81=0
4x-25=0
x^2-18=0
3x^2-8=25
x^2+72=0

Answer 1

x=9 
x=6.25
x=4.24
x=3.32
x= can't take the square root of a negative number 

*also remember that when you take the square root it is the + and - sign for the answer