问题
解答题
当x=
|
答案
x=
=1 2+ 3
=2-2- 3 (2+
)(2-3
)3
，3
∴原式=x(x-1) 2(x-1)2
=x(x-1)
(1-x)2
=-x 2
=-2- 3 2
=-
．2
-2 6 2
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当x=
|
x=
=1 2+ 3
=2-2- 3 (2+
)(2-3
)3
，3
∴原式=x(x-1) 2(x-1)2
=x(x-1)
(1-x)2
=-x 2
=-2- 3 2
=-
．2
-2 6 2