Question

單項(xiàng)式-

1

5

x³y的系數(shù)是

-

1

5

．

Answer 1

分析：根據(jù)單項(xiàng)式系數(shù)的定義判斷即可得到結(jié)果．

解答：解：單項(xiàng)式-

1

5

x³y的系數(shù)是-

1

5

．
故答案為：-

1

5

．

點(diǎn)評：此題考查了單項(xiàng)式，熟練掌握單項(xiàng)式系數(shù)的定義是解本題的關(guān)鍵．