问题
解答题
计算: (1)
(2)(
(3)
(4)
|
答案
(1)原式=2
+23
-5
+5 3
=3
+3
;5
(2)原式=(3
+a
-2a
)÷a b
=2
÷a b
=
;2 ab b
(3)原式=1+4+4
+33 7-3
=8+4 3 4
=2+
;3
(4)原式=2
+3
-1+23
=3
+1.3
计算: (1)
(2)(
(3)
(4)
|
(1)原式=2
+23
-5
+5 3
=3
+3
;5
(2)原式=(3
+a
-2a
)÷a b
=2
÷a b
=
;2 ab b
(3)原式=1+4+4
+33 7-3
=8+4 3 4
=2+
;3
(4)原式=2
+3
-1+23
=3
+1.3