SOLUTION: 3^9 . (x^2 y)^-2/ 3^3 . x^-4 y answer: 3^6/y^3 or 729/y^3 how did my math book get this answer and can anyone explain by defintions and rules for exponents i got as f

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 3^9 . (x^2 y)^-2/ 3^3 . x^-4 y answer: 3^6/y^3 or 729/y^3 how did my math book get this answer and can anyone explain by defintions and rules for exponents i got as f      Log On


   

Question 219489: 3^9 . (x^2 y)^-2/ 3^3 . x^-4 y



answer: 3^6/y^3 or 729/y^3
how did my math book get this answer and can anyone explain by defintions and rules for exponents i got as far as 3^6 power by quotient rule but then i got stuck by the rest
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Start with and , so:



Next use , so:



Next use and , so:



Finally, use , so:




John