问题
解答题
计算: (1)4
(2)(5
(3)(
|
答案
(1)原式=4
+35
-25
+42 2
=7
+25
;2
(2)原式=(20
-183
+43
)÷15 3
=2+4
;5
(3)原式=a-2b.
计算: (1)4
(2)(5
(3)(
|
(1)原式=4
+35
-25
+42 2
=7
+25
;2
(2)原式=(20
-183
+43
)÷15 3
=2+4
;5
(3)原式=a-2b.