SOLUTION: 2logx-log7=log112

Question 151169: 2logx-log7=log112
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve for x:
Apply the power rule for logs to the first term.
Now apply the quotient rule.
Apply the identity rule: If then
Multiply both sides by 7.
Take the square root of both sides.
Only the positve value of the square root is valid.
Check:
Substitute x = 28.

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