SOLUTION: Solve the equation: 9x^2-64=0

Algebra ->  Systems-of-equations -> SOLUTION: Solve the equation: 9x^2-64=0      Log On


   

Question 623019: Solve the equation:
9x^2-64=0
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
With this one: 9x^2-64=0
First add 64 and we get:
9x^2=64
Divide by 9:
x^2=64/9
Square root both sides:
x=+-8/3
Make sense?
RJ
www.math-unlock.com