Question

多項(xiàng)式-3x²y+5x²y²-7xy-8的最高次項(xiàng)是

5x²y²

，常數(shù)項(xiàng)是

-8

．

Answer 1

分析：根據(jù)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)，進(jìn)行判斷即可．

解答：解：多項(xiàng)式-3x²y+5x²y²-7xy-8的最高次項(xiàng)為5x²y²，常數(shù)項(xiàng)為-8，
故填空答案：5x²y²；-8．

點(diǎn)評(píng)：本題考查了同學(xué)們對(duì)多項(xiàng)式的項(xiàng)和次數(shù)定義的掌握情況，屬于基礎(chǔ)題，關(guān)鍵是掌握次數(shù)、項(xiàng)數(shù)的判斷方法，難度一般．