问题
解答题
(1)计算:
(2)化简:(
|
答案
(1)原式=2
-2×2
+1-32 2
=
-2;2
(2)原式=
•x2-1 x+1 x2 x2-x
=
•(x+1)(x-1) x+1 x2 x(x-1)
=x.
(1)计算:
(2)化简:(
|
(1)原式=2
-2×2
+1-32 2
=
-2;2
(2)原式=
•x2-1 x+1 x2 x2-x
=
•(x+1)(x-1) x+1 x2 x(x-1)
=x.