把多项式2xy2-x2y-x3y3-7按x作升幂排列是_.
问题描述:
把多项式2xy2-x2y-x3y3-7按x作升幂排列是______.
答
根据题意得:-7+2xy2-x2y-x3y3.
故答案为:-7+2xy2-x2y-x3y3