问题
解答题
计算: (1)
(2)3
|
答案
(1)
-1 2
(6
-23
)=2
-32 2
+42
=-3
+45 2 2
;3
(2)3
-2xx 8
+2 x 5 4
=x 50
-23 2x 4
+2x
=-2x 8 9 8
.2x
计算: (1)
(2)3
|
(1)
-1 2
(6
-23
)=2
-32 2
+42
=-3
+45 2 2
;3
(2)3
-2xx 8
+2 x 5 4
=x 50
-23 2x 4
+2x
=-2x 8 9 8
.2x