Question

多項(xiàng)式3x⁴-x²y³+5x-7的項(xiàng)數(shù)是

四

，次數(shù)是

五

，最高次項(xiàng)是

-x²y³

，常數(shù)項(xiàng)是

-7

．

Answer 1

分析：根據(jù)多項(xiàng)式的有關(guān)概念求解．

解答：解：多項(xiàng)式3x⁴-x²y³+5x-7的項(xiàng)數(shù)是四項(xiàng)，次數(shù)是五次，最高次項(xiàng)是-x²y³，常數(shù)項(xiàng)是-7．
故答案為四，五，-x²y³，-7．

點(diǎn)評(píng)：本題考查了多項(xiàng)式：幾個(gè)單項(xiàng)式的和叫做多項(xiàng)式，每個(gè)單項(xiàng)式叫做多項(xiàng)式的項(xiàng)，其中不含字母的項(xiàng)叫做常數(shù)項(xiàng)．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)．