SOLUTION: Solve for x: 4x^2-28=0

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Question 275257: Solve for x: 4x^2-28=0
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4x^2-28=0 factor out the 4
4(x^2-7)=0
x^2-7=0 add 7
x^2=7 take the sqrt
x=sqrt7 or 2.64575 ans.