问题
填空题
把多项式:x2y-1+2xy2-3x3按x的升幂排列为______.
答案
按x的升幂排列为
x2y-1+2xy2-3x3=-1+2xy2+x2y-3x3,
故填空答案:-1+2xy2+x2y-3x3.
把多项式:x2y-1+2xy2-3x3按x的升幂排列为______.
按x的升幂排列为
x2y-1+2xy2-3x3=-1+2xy2+x2y-3x3,
故填空答案:-1+2xy2+x2y-3x3.