Question

把多項(xiàng)式按字母X的降冪排列-3x+

5

3

-

3

2

x2y+

1

2

x3=

1

2

x³-

3

2

x²y-3x+

5

3

．

Answer 1

分析：按照x的次數(shù)從高到低進(jìn)行重新排列即可．

解答：解：原式=

1

2

x³-

3

2

x²y-3x+

5

3

．
故答案是：

1

2

x³-

3

2

x²y-3x+

5

3

．

點(diǎn)評(píng)：本題考查了多項(xiàng)式，解題的關(guān)鍵是注意不要丟失符號(hào)．