问题
解答题
计算或化简: (1)(-1)0+|2-
(2 )
|
答案
(1)原式=1+2-
+2×3 3 2
=3-
+3 3
=3.
(2)原式=
-x+1 x2- 1 2 x2-1
=x+1-2 (x+1)(x-1)
=
.1 x+1
计算或化简: (1)(-1)0+|2-
(2 )
|
(1)原式=1+2-
+2×3 3 2
=3-
+3 3
=3.
(2)原式=
-x+1 x2- 1 2 x2-1
=x+1-2 (x+1)(x-1)
=
.1 x+1