Question

單項(xiàng)式-

5xy3

2

的系數(shù)是

-

5

2

．

Answer 1

分析：根據(jù)單項(xiàng)式系數(shù)的定義來求解．單項(xiàng)式中數(shù)字因數(shù)叫做單項(xiàng)式的系數(shù)．

解答：解：?jiǎn)雾?xiàng)式-

5xy3

2

的系數(shù)是-

5

2

．
故答案為：-

5

2

．

點(diǎn)評(píng)：本題考查了單項(xiàng)式．確定單項(xiàng)式的系數(shù)時(shí)，把一個(gè)單項(xiàng)式分解成數(shù)字因數(shù)和字母因式的積，是找準(zhǔn)單項(xiàng)式的系數(shù)的關(guān)鍵．