Question

多項(xiàng)式-5a²b+ab-1是________次________項(xiàng)式，最高次項(xiàng)是________，常數(shù)項(xiàng)是________．

Answer 1

三    三    -5    -1
分析：根據(jù)多項(xiàng)式中次數(shù)最高的項(xiàng)的次數(shù)叫做多項(xiàng)式的次數(shù)．不含字母的項(xiàng)叫做常數(shù)項(xiàng)可得答案．
解答：多項(xiàng)式-5a²b+ab-1是三次三項(xiàng)式，最高次項(xiàng)是-5a²b，常數(shù)項(xiàng)是-1．
故答案為：三；三；-5a²b；-1．
點(diǎn)評(píng)：此題主要考查了多項(xiàng)式，關(guān)鍵是掌握多項(xiàng)式次數(shù)的計(jì)算方法．