SOLUTION: solve the equation by finding square roots if necessary round to nearest 7x squared -8 = 20. can you show me the steps?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: solve the equation by finding square roots if necessary round to nearest 7x squared -8 = 20. can you show me the steps?      Log On


   

Question 282242: solve the equation by finding square roots if necessary round to nearest
7x squared -8 = 20.
can you show me the steps?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
7x^2-8=20
add 8
7x^2=28
divide by 7
x^2=4
take sq rt
x=2