SOLUTION: solve for x by using the factoring method: 3x^2-48=0

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Question 225813: solve for x by using the factoring method:
3x^2-48=0
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
solve for x by using the factoring method:
3x^2 - 48 = 0
Factor out 3
3(x^2 - 16)
x^2 = 16
x = sqrt%2816%29
x = +/- 4
;
:
Is this true?
3(4^2) - 48 = 0
3(16) - 48 = 0