x+y分之x^2-x+y等于
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解决时间 2021-11-30 07:08
- 提问者网友:棒棒糖
- 2021-11-29 19:53
x+y分之x^2-x+y等于
最佳答案
- 五星知识达人网友:渡鹤影
- 2021-11-29 20:45
x+y分之x^2-x+y
本题为:
x²/(x+y) -x+y
=x²/(x+y) -(x-y)(x+y)/(x+y)
=(x²-(x-y)(x+y))/(x+y)
=(x²-x²+y²)/(x+y)
=y²/(x+y)
本题为:
x²/(x+y) -x+y
=x²/(x+y) -(x-y)(x+y)/(x+y)
=(x²-(x-y)(x+y))/(x+y)
=(x²-x²+y²)/(x+y)
=y²/(x+y)
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