Question

多項(xiàng)式-

2

5

x²y-

2

3

xy+

1

4

是______次______項(xiàng)式，三次項(xiàng)系數(shù)是______．

Answer 1

由于-

2

5

x²y-

2

3

xy+

1

4

的最高次數(shù)是3次，共三項(xiàng)，所以原式是三次三項(xiàng)式，三次項(xiàng)系數(shù)是-

2

5

．