Question

3²x²y³的系數(shù)是

9

，次數(shù)是

5

．

Answer 1

分析：要根據(jù)單項(xiàng)式系數(shù)和指數(shù)的定義來(lái)填，單項(xiàng)式中數(shù)字因數(shù)叫做單項(xiàng)式的系數(shù)，所有字母指數(shù)的和是單項(xiàng)式的次數(shù)．

解答：解：?jiǎn)雾?xiàng)式系數(shù)和指數(shù)的定義，式子3²x²y³的系數(shù)是9，次數(shù)是5．
故答案為：9；5．

點(diǎn)評(píng)：本題考查單項(xiàng)式的系數(shù)和次數(shù)，根據(jù)單項(xiàng)式系數(shù)和次數(shù)的定義得出是解題關(guān)鍵．