SOLUTION: Please help me solve this equation: {{{(x^2+4)^(2/3) = 25 }}}

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Question 7312: Please help me solve this equation: %28x%5E2%2B4%29%5E%282%2F3%29+=+25+
Answer by Earlsdon(6103) About Me  (Show Source):
You can put this solution on YOUR website!
Try this:
%28x%5E2%2B4%29%5E%282%2F3%29+=+25 Raise both sides to the 3/2 power.

%28x%5E2%2B4%29+=+25%5E%283%2F2%29
x%5E2%2B4+=+125 Subtract 4 from both sides.
x%5E2+=+121 Take the square root of both sides.
x+=+11 or x+=+-11
Check:
%2811%5E2+%2B+4%29%5E%282%2F3%29+=+125%5E%282%2F3%29
125%5E%282%2F3%29+=+25