SOLUTION: I've tried to work this out but can't figure out where I'm going wrong... (-2)^2-(-2)^-3(3) I get 4 + 1/8 times 3 or 99/8 but the answer is suppose to be 35/8. ??????

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: I've tried to work this out but can't figure out where I'm going wrong... (-2)^2-(-2)^-3(3) I get 4 + 1/8 times 3 or 99/8 but the answer is suppose to be 35/8. ??????       Log On


   

Question 27653: I've tried to work this out but can't figure out where I'm going wrong...
(-2)^2-(-2)^-3(3)
I get
4 + 1/8 times 3 or 99/8 but the answer is suppose to be 35/8. ??????
Thank you for any assistance.
Rebecca
Answer by askmemath(368) About Me  (Show Source):
You can put this solution on YOUR website!
4 + 1/8 times 3
which is 4+%2B+%281%2F8%29%2A+3
4+%2B%283%2F8%29
Taking LCM
%28%288%2A4%29%2B3%29%2F8
%2832%2B3%29%2F8+=+35%2F8