Asked by mann
solve: 5 ^(x+2) - 5^(x+1) = 5
Answers
Answered by
Steve
do a little multiplying, and we have
25*5^x + 5*5^x = 5
30*5^x = 5
5^x = 1/6
x = -log(6)/log(5)
25*5^x + 5*5^x = 5
30*5^x = 5
5^x = 1/6
x = -log(6)/log(5)
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