精选问答
(2004•淄博)计算:x2−y2x2+2xy+y2÷x−yx2+xy.

2019-04-29

(2004•淄博)计算:
x2y2
x2+2xy+y2
÷
x−y
x2+xy
优质解答
原式=
(x+y)(x−y)
(x+y)2
x(x+y)
x−y

=x.
原式=
(x+y)(x−y)
(x+y)2
x(x+y)
x−y

=x.
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