约分:2bc/ac

约分2bc/ac等于多少2bc/ac =2b/a(x+y)y/xy^2=(x+y)/xyx^2+xy/(x+y)^2= x/(x+y)x^2-y^2/(x-y)^2=(x+y)/(x-y)2c/bd与3ac/4b^2 8bdc/4b^2d 3ac^2/4b^22xy/(x+y)^2与x/x^2-y^22...