问题
解答题
(1)计算:(-
(2)化简:(1+
|
答案
(1)原式=-2-
+1+4×21 3 2
=-1-
+221
;3
(2)原式=
•a2 a2-4 a+2 a
=
•a2 (a+2)(a-2) a+2 a
=
.a a-2
(1)计算:(-
(2)化简:(1+
|
(1)原式=-2-
+1+4×21 3 2
=-1-
+221
;3
(2)原式=
•a2 a2-4 a+2 a
=
•a2 (a+2)(a-2) a+2 a
=
.a a-2