SOLUTION: i have a fraction that is 4 with a negative exponent of 2 over 7. the goal is to get the -2 exponent to a positve exponent, but im not sure how to do that. thanks!

Algebra ->  Exponents -> SOLUTION: i have a fraction that is 4 with a negative exponent of 2 over 7. the goal is to get the -2 exponent to a positve exponent, but im not sure how to do that. thanks!      Log On


   

Question 388663: i have a fraction that is 4 with a negative exponent of 2 over 7.
the goal is to get the -2 exponent to a positve exponent, but im not sure how to do that.
thanks!
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that a%5E%28-b%29+=+1%2F%28a%5Eb%29 So, 4%5E%28-2%2F7%29+=+1%2F%284%5E%282%2F7%29%29.