Which is equivalent to the following expression?
distribute them out:
9(x^2)(y^3)(12)(x^-3)(y^5)(2)(x)(y) =
(9 * 12 * 2)(x^2 * x^-3 * x)(y^3 * y^5 * y) =
(216)(1)(y^9) =
216 * y^9
