SOLUTION: log5(x+7)+log5(x-7)=2
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Question 171125: log5(x+7)+log5(x-7)=2
Answer by KnightOwlTutor(293) (Show Source): You can put this solution on YOUR website!
we know that 5^2=25
therefore x+7+x-7=25
Simplify
2x=25
Divide both sides by 2
x=12.5
Plug into the equation to doublecheck
12.5+7=19.5
12.5-7=5.5
19.5+5.5=25
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