2XY^2×(-3XY)^2=
问题描述:
2XY^2×(-3XY)^2=
答
2XY^2×(-3XY)^2
=2XY^2×9X^2Y^2
=18X^3Y^4
2XY^2×(-3XY)^2=
2XY^2×(-3XY)^2
=2XY^2×9X^2Y^2
=18X^3Y^4