SOLUTION: Solve. {{{x^2-80=0}}}

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Question 92221: Solve.
x%5E2-80=0
Answer by mathispowerful(115) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-80=0
add 87 on both sides:
we get x%5E2+=+80

take square root on both sides:
x+=+sqrt%2880%29 orx+=+-sqrt%2880%29
simplify each of them:
x+=+4sqrt%285%29 or x+=+-4sqrt%285%29