Asked by serad

Express using positive exponents and simplify, if possible.
−8−1 + 8−2
Answered by Ms. Sue
−8−1 + 8−2 = -3
Answered by serad
that's not right
sue but thanks for answering if that was answer i wouldn't anyone
Answered by Ms. Sue
You omitted your School Subject.

Did you omit something from the problem?
Answered by serad
****correction****
that's not right sue if that was answer i wouldn't ask anyone for help i know that answer that's what i ask but still thanks for answering sue i really appreciate that
Answered by Reiny
You have no exponents in your original question.
Ms Sue's answer is correct for the question you typed.

did you mean −8^−1 + 8^−2 ?
then
= 1/-8 + 1/8^2
Answered by Steve
If Reiny is right, then to simplify,

-1/8 + 1/8^2
= -8/8^2 + 1/8^2
= -7/8^2
or,

2
∑ -2^k/8^2
k=0

How's that for simple? And all positive exponents!
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