多项式3xy2−1−12x2y3−x3按x的降幂排列为−x3−12x2y3+3xy2−1−x3−12x2y3+3xy2−1．

Question

多项式3xy2−1−(1)/(2)x2y3−x3按x的降幂排列为

−x3−(1)/(2)x2y3+3xy2−1

−x3−(1)/(2)x2y3+3xy2−1

．

Answer 1

多项式3xy2−1−(1)/(2)x2y3−x3按x的降幂排列为−x3−(1)/(2)x2y3+3xy2−1．