问题描述:
下列公式中,计算正确的是( )
A.2(b+c)/a+3(b+c)=a+2/3 B.a+b/a^2+b^2=2/a+b
C.(a-b)^2/(a+b)^2=1 D.x-y/2xy-x^2-y^2=1/y-x
A.2(b+c)/a+3(b+c)=a+2/3 B.a+b/a^2+b^2=2/a+b
C.(a-b)^2/(a+b)^2=1 D.x-y/2xy-x^2-y^2=1/y-x
问题解答:
我来补答展开全文阅读