(m²/m-2+4/2-m)/(m+2)咋做
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解决时间 2021-11-09 14:40
- 提问者网友:十年饮冰
- 2021-11-08 22:16
(m²/m-2+4/2-m)/(m+2)咋做
最佳答案
- 五星知识达人网友:底特律间谍
- 2021-11-08 22:34
解:
[m²/(m-2)+4/(2-m)]/(m+2)
=[m²/(m-2)-4/(m-2)]/(m+2)
=[(m²-4)/(m-2)]/(m+2)
=[(m+2)(m-2)/(m-2)]/(m+2)
=(m+2)/(m+2)
=1
[m²/(m-2)+4/(2-m)]/(m+2)
=[m²/(m-2)-4/(m-2)]/(m+2)
=[(m²-4)/(m-2)]/(m+2)
=[(m+2)(m-2)/(m-2)]/(m+2)
=(m+2)/(m+2)
=1
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