Question 611139: Solve for X, and just for real numbers
log(X+4)+log10(X-5)=1
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Solve for X, and just for real numbers
log(X+4)+log10(X-5)=1
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log[(x+4)(x-5)] = 1
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log[x^2-x-20] = 1
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x^2-x-20 = 10
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x^2-x-30 = 0
Factor:
(x-6)(x+5) = 0
x = 6 or x = -5
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Cheers,
Stan H.
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