Question

16．代數(shù)式$\frac{4}{5}{a^3}x-{a^2}{x^3}+\frac{1}{5}x$的項(xiàng)有$\frac{4}{5}$a³x，-a²x³，$\frac{1}{5}$x，次數(shù)是5次．

Answer 1

分析 根據(jù)多項(xiàng)式中的每個(gè)單項(xiàng)式是多項(xiàng)式的項(xiàng)，多項(xiàng)式的次數(shù)是多項(xiàng)式中次數(shù)最高的單項(xiàng)式的次數(shù)，可得答案．

解答 解：$\frac{4}{5}{a^3}x-{a^2}{x^3}+\frac{1}{5}x$的項(xiàng)有$\frac{4}{5}$a³x，-a²x³，$\frac{1}{5}$x，次數(shù)是5次．
故答案為：$\frac{4}{5}$a³x，-a²x³，$\frac{1}{5}$x；5．

點(diǎn)評(píng) 本題考查了多項(xiàng)式，多項(xiàng)式中的每個(gè)單項(xiàng)式是多項(xiàng)式的項(xiàng)，多項(xiàng)式的次數(shù)是多項(xiàng)式中次數(shù)最高的單項(xiàng)式的次數(shù)，注意多項(xiàng)式的項(xiàng)包括項(xiàng)的符號(hào)．