SOLUTION: i cant figure out how to solve this radical equation square root of 20-8x=x

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Question 454398: i cant figure out how to solve this radical equation square root of 20-8x=x
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
square root of 20-8x=x
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If you meant sqrt(20-8x) = x
Square both sides to get: 20-8x = x^2
x^2+8x-20 = 0
(x+10)(x-2) = 0
Only solution:
x = 2 because sqrt(20-8x) must not be negative.
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Cheers,
Stan H.