问题 解答题
(1)计算:(-2008)0-|1-
3
|-2sin60°
(2)化简:(1+
4
a2-4
)•
a+2
a
答案

(1)原式=1-(

3
-1)-
3
=1-
3
+1-
3
=2-2
3

(2)原式=

a2
a2-4
a+2
a
=
a2
(a+2)(a-2)
a+2
a
=
a
a-2

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