SOLUTION: x-sqrt(x)-2=0

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Question 900118: x-sqrt(x)-2=0
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x-sqrt%28x%29-2=0
x-2=sqrt%28x%29
%28x-2%29%5E2=x
x%5E2-4x%2B4=x
x%5E2-5x%2B4=0
%28x-4%29%28x-1%29=0
Two solutions:
x-4=0
x=4
and
x-1=0
x=1
Verify that these are really solutions.
x-sqrt%28x%29-2=0
4-sqrt%284%29-2=0
4-2-2=0
0=0
True, good solution.
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1-sqrt%281%29-2=0
1-1-2=0
-2=0
False, not a good solution.
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highlight_green%28x=4%29