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> 先将x2-2xx+1•(1+1x)化简,然后请你自选一个合理的x值,求原式的值.-数学
先将x2-2xx+1•(1+1x)化简,然后请你自选一个合理的x值,求原式的值.-数学
题目简介
先将x2-2xx+1•(1+1x)化简,然后请你自选一个合理的x值,求原式的值.-数学
题目详情
先将
x
2
-2x
x+1
•(1+
1
x
)
化简,然后请你自选一个合理的x值,求原式的值.
题型:解答题
难度:中档
来源:黑龙江
答案
原式=
x(x-2)
x+1
•
class="stub"x+1
x
=x-2,
当x=2时,原式=2-2=0.
(说明:只要x不取-1和0,取其他值计算正确均可)
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题目简介
先将x2-2xx+1•(1+1x)化简,然后请你自选一个合理的x值,求原式的值.-数学
题目详情
答案
当x=2时,原式=2-2=0.
(说明:只要x不取-1和0,取其他值计算正确均可)