下列格式中.计算正确的是
问题描述：
下列格式中.计算正确的是
A.(x^2-y^2)/(x-y)=x-y
B.(x^3-y^3)/(x-y)=x^2+xy+y^2
C.(x+y)^2/(x+y)=x-y
D.(x+y)^3/(x+y)=x^2+xy+y^2
答
B
下列格式中.计算正确的是
A.(x^2-y^2)/(x-y)=x-y
B.(x^3-y^3)/(x-y)=x^2+xy+y^2
C.(x+y)^2/(x+y)=x-y
D.(x+y)^3/(x+y)=x^2+xy+y^2
B