问题
解答题
计算或化简: (1)
(2)
|
答案
(1)原式=
+1-1-22
+5-2 1 2
=
-9 2
;2
(2)原式=
÷x-1 x x2-2x+1 x
=
•x-1 x x (x-1)2
=
.1 x-1
计算或化简: (1)
(2)
|
(1)原式=
+1-1-22
+5-2 1 2
=
-9 2
;2
(2)原式=
÷x-1 x x2-2x+1 x
=
•x-1 x x (x-1)2
=
.1 x-1