SOLUTION: Evaluate the following logarithms ,Solve for the following notations. Find xif log(x^2-21)=2

SOLUTION: Evaluate the following logarithms ,Solve for the following notations. Find xif log(x^2-21)=2

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Question 1022907: Evaluate the following logarithms ,Solve for the following notations.
Find xif log(x^2-21)=2

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!

<==> ==> ==> x = 11, -11.
Both are valid solutions.
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