幾個(gè)單項(xiàng)式的和叫作多項(xiàng)式,如2+xy3、x3+ax2+3x+6等都是多項(xiàng)式.多項(xiàng)式中每個(gè)單項(xiàng)式叫作多項(xiàng)式的項(xiàng),其中不含字母的項(xiàng)稱為常數(shù)項(xiàng).多項(xiàng)式中次數(shù)最高項(xiàng)的次數(shù)就是多項(xiàng)式的次數(shù),如x5y+xy-1的次數(shù)就是單項(xiàng)式x5y的次數(shù)6.多項(xiàng)式通常以它的次 (本文共 284 字 ) [閱讀本文] >>