SOLUTION: If log(x³+3) - log(x+7) + log2 = logx,find the value of x where the bases are 10.
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Question 1124557: If log(x³+3) - log(x+7) + log2 = logx,find the value of x where the bases are 10.
Found 2 solutions by Alan3354, math_helper:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If log(x³+3) - log(x+7) + log2 = logx,find the value of x where the bases are 10.If log(x³+3) - log(x+7) + log2 = logx,find the value of x where the bases are 10.
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x = 1
x = -2 ---- not allowed
You can find the 3rd root.
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PS The base is not relevant.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
Raise 10 to each side:
After some Algebra:
This factors to:
Solutions and work. Discard x = -2 because log(x) not defined for x<0.
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