SOLUTION: Please help me solve this equation: 3x^2-45=0

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Question 139406: Please help me solve this equation:
3x^2-45=0
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
3x%5E2-45=0

Divide both sides by 3:
x%5E2-15=0

Factor the difference of two squares:
x%5E2-15=%28x%2Bsqrt%2815%29%29%28x-sqrt%2815%29%29

So, x=sqrt%2815%29 or x=-sqrt%2815%29