algebra
posted by simone .
how do i simplify the following expression ,writing the answer with a positive exponent only?
(yz^2)^4)(2y^3z^4)3/4y^9z^5

(YZ^2)^4(2Y^3Z^4)^3 / (4Y^9Z^5 =
(Y^4Z^8)(8Y^9Z^12) / (4Y^9Z^5)=
8Y^5Z^20 / 4Y^9Z^5 =
2Y^14Z^15 = 2 / Y^14Z^15