(3x^2y^3)/(2xy)^2=?(3x^2y^2)/(xy)*(1/y)=?x^2y-5x^2y+3x^y=?(6x^2y-_数学解答

(3x^2y^3)/(2xy)^2=?(3x^2y^2)/(xy)*(1/y)=?x^2y-5x^2y+3x^y=?(6x^2y-4xy^2)/2xy=?
(-3/4x)(8x^2-4)=?(a^2-b^2)^2/(a+b)^2=?
多项式a-4a^b-5是_____次_____项式

人气：121 ℃　时间：2020-01-28 16:19:05

解答

(3x^2y^3)/(2xy)^2=3y/2;(3x^2y^2)/(xy)*(1/y)=3x;x^2y-5x^2y+3x^2y=-x²y;(6x^2y-4xy^2)/2xy=3x-2y;(-3/4x)(8x^2-4)=-6x³+3x;(a^2-b^2)^2/(a+b)^2=(a-b)²;多项式a-4a^2b-5是__3___次_3____项式很高兴...