计算:
|
解法一:原式=
+2
(3-3
)3 (3+
)(3-3
)3
-(4+23
)+3 3 2
=
+23
-33 6
-4-23
+3 3 2
=
-3
;9 2
解法二:原式=
+23
(3
+1)3
-(4+23
)+3 3 2
=
+2
-13 (
+1)(3
-1)3
-(4+23
)+3 3 2
=
-3 2
-4+1 2 3 2
=
-3
.9 2
计算:
|
解法一:原式=
+2
(3-3
)3 (3+
)(3-3
)3
-(4+23
)+3 3 2
=
+23
-33 6
-4-23
+3 3 2
=
-3
;9 2
解法二:原式=
+23
(3
+1)3
-(4+23
)+3 3 2
=
+2
-13 (
+1)(3
-1)3
-(4+23
)+3 3 2
=
-3 2
-4+1 2 3 2
=
-3
.9 2