SOLUTION: Tutors Your help is needed please: Thank you very much
Solve
log2(x+5)+log2(x-1)=4
The 2s are smaller and below log
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Question 144203: Tutors Your help is needed please: Thank you very much
Solve
log2(x+5)+log2(x-1)=4
The 2s are smaller and below log
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve
log2(x+5)+log2(x-1)=4
---------------
log2[(x+5)(x-1)] = 4
[(x+5)(x-1)] = 2^4
x^2+4x-5 = 16
x^2 + 4x -21 = 0
(x+7)(x-3) = 0
Positive solution:
x = 3
-----------------
Cheers,
Stan H.
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