Answer
$3076x^{16}y^{13}$
Work Step by Step
$(2xy)^4(3x^4y^3)^3=(2^4)(x^4)(y^4)(3^3)(x^4)^3(y^3)^3=(16)(x^4)(y^4)(27)(x^{(4\times3)})(y^{(3\times3)})=(16)(x^4)(y^4)(27)(x^{12})(y^{9})=(16)(27)(x^{(4+12)})(y^{(4+9)})=3076x^{16}y^{13}$
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