SOLUTION: how do u simplify (-y)5m8/y3m-7 if all numbers are exponents

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: how do u simplify (-y)5m8/y3m-7 if all numbers are exponents      Log On


   

Question 5772: how do u simplify
(-y)5m8/y3m-7 if all numbers are exponents
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
%28-y%29%5E%285%29m%5E%288%29%2Fy%5E%283%29m%5E%28-7%29

first things first...-1 to power 5 is -1*-1*-1*-1*-1 which is -1.
y^5/y^3...division, so subtract powers --> y^2
m^8/m^(-7)...division, so subtract powers --> 8-(-7) -> 8+7 --> 15

so, answer is -y%5E2m%5E15

jon.