Problem

Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expressions. Give the exact answer.
log5(x+7)+log5(x+3)=1
Rewrite the given equation without logarithms. Do not solve for x.

Answer

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Answer

The equation without logarithms is 5=(x+7)(x+3)

Steps

Step 1 :Rewrite the given equation without logarithms. The equation can be rewritten as log5((x+7)(x+3))=1.

Step 2 :Use the definition of logarithms to rewrite this equation without logarithms. The definition of logarithms states that if logb(a)=c, then bc=a. So, we can rewrite our equation as 51=(x+7)(x+3).

Step 3 :The equation without logarithms is 5=(x+7)(x+3)

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