x+3y+（x-3y）分之（9y方）+（9y方-x方）分之（6x方y）求过程_数学解答

x+3y+（x-3y）分之（9y方）+（9y方-x方）分之（6x方y）求过程

人气：252 ℃　时间：2020-03-26 03:07:59

解答

=(x+3y)(x-3y)/(x-3y)+9y² /(x-3y)-6x²y/(x+3y)(x-3y)=(x²-9y²+9y²) /(x-3y)-6x²y/(x+3y)(x-3y)=x² /(x-3y)-6x²y/(x+3y)(x-3y)=[x²(x+3y)-6x²y]/(x+3y)(x-3y)=(x...