问题
解答题
计算: (1)(
(2)
|
答案
(1)原式=3+1+2-
+3 2(
+1)3 (
-1)(3
+1)3
=3+1+2-
+3
+13
=7;
(2)原式=
•32 3
+6•x 1 2
-2x•x 1 x x
=2
+3x
-2x x
=3
.x
计算: (1)(
(2)
|
(1)原式=3+1+2-
+3 2(
+1)3 (
-1)(3
+1)3
=3+1+2-
+3
+13
=7;
(2)原式=
•32 3
+6•x 1 2
-2x•x 1 x x
=2
+3x
-2x x
=3
.x