Question

單項(xiàng)式-a²bc的系數(shù)是________；次數(shù)是________．

Answer 1

    4
分析：根據(jù)單項(xiàng)式系數(shù)、次數(shù)的定義來(lái)求解．單項(xiàng)式中數(shù)字因數(shù)叫做單項(xiàng)式的系數(shù)，所有字母的指數(shù)和叫做這個(gè)單項(xiàng)式的次數(shù)
解答：根據(jù)單項(xiàng)式系數(shù)、次數(shù)的定義可知，單項(xiàng)式-a²bc的系數(shù)是；次數(shù)是4．
點(diǎn)評(píng)：確定單項(xiàng)式的系數(shù)和次數(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)和次數(shù)的關(guān)鍵．做此題時(shí)注意不要忽略b，c的指數(shù)都是1．