SOLUTION: x-4√x-5=0
Find x.
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Question 1024543: x-4√x-5=0
Find x.
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
x-4√x-5=0
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That is a quadratic whose variable is sqrt(x).
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Factor::
(sqrt(x)-5)(sqrt(x)+1) = 0
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sqrt(x) = 5 or sqrt(x) = -1
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x = 25
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Cheers,
Stan H.
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Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
x-4√x-5=0
Find x.
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Sub y for sqrt(x)
--? y^2 - 4y - 5 = 0
(y-5)*(y+1) = 0
y = -1, 5
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sqrt(x) = -1
x = 1
----
sqrt(x) = 5
x = 25
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