求单项式2xy,6x方y方,-3xy,-4x方y方的和;
问题描述:
求单项式2xy,6x方y方,-3xy,-4x方y方的和;
答
2x²y²-xy
答
2X方Y方-XY
求单项式2xy,6x方y方,-3xy,-4x方y方的和;
2x²y²-xy
2X方Y方-XY