Solve the exponential equation. express the solution set in terms of natural logarithms 5^×+7=2

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asked Apr 21, 2018 29.4k views

1 Answer

Delbis · Answer 1 · 2018-04-25T14:46:11+0000

5^(x+7)=2
the known number is in the exponent, so use log to solve
Log both sides: log5^(x+7)=log2
(x+7)log5=log2
x+7=log2/log5
x=log2/log5 -7
the result needs to be logarithms, so the above is your final answer

Solve the exponential equation. express the solution set in terms of natural logarithms 5^×+7=2

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