化簡(jiǎn):(15x2y-10xy2)÷(5xy)=________.
3x-2y
分析:根據(jù)多項(xiàng)式除以單項(xiàng)式,先把多項(xiàng)式的每一項(xiàng)都分別除以這個(gè)單項(xiàng)式,然后再把所得的商相加,計(jì)算即可.
解答:(15x2y-10xy2)÷(5xy),
=(15x2y)÷(5xy)+(-10xy2)÷(5xy),
=3x-2y.
故應(yīng)填:3x-2y.
點(diǎn)評(píng):本題考查多項(xiàng)式除以單項(xiàng)式運(yùn)算,熟練掌握運(yùn)算法則是解題的關(guān)鍵.