Question

單項(xiàng)式-

m4n2

2

的系數(shù)是

-

1

2

．

Answer 1

分析：首先把-

m4n2

2

寫成-

1

2

m⁴n²，根據(jù)單項(xiàng)式系數(shù)的定義：?jiǎn)雾?xiàng)式中數(shù)字因數(shù)叫做單項(xiàng)式的系數(shù)求解．

解答：解：?jiǎn)雾?xiàng)式-

m4n2

2

的系數(shù)是-

1

2

．
故答案為：-

1

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．