SOLUTION: Solve for x and explain: log[5] x=-2 Hint: [] stands for the number is written is subscript!

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Question 185690: Solve for x and explain:
log[5] x=-2
Hint: [] stands for the number is written is subscript!
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
From "log rules" we have (using your notation):
log[a] x = N means that a^N = x
where ^ represents exponent
.
So, for:
log[5] x=-2
x = 5^(-2)
x = 1/5^2
x = 1/25
.
Review log rules here:
http://www.mathwords.com/l/logarithm_rules.htm