3y/(2x+2y)+2xy/(x^2+xy)
问题描述:
3y/(2x+2y)+2xy/(x^2+xy)
答
你这是要求什么啊?????
答
3y/(2x+2y)+2xy/(x^2+xy)=3y/[2(x+y)] + 2y/(x+y)]=(3y+4y)/[2(x+y)] =7y/[2(x+y)]