问题
解答题
计算:(1)
(2)(5
(3)(6
(4)
|
答案
(1)原式=2(
+1)+32
-22
=32
+2;2
(2)原式=(20
-183
+43
)÷15
,3
=20-18+4
,5
=2+4
;5
(3)原式=(3
-2x
)÷3x
,x
=
÷3x
,x
=
;1 3
(4)原式=3
+2
-1+2
=41 4
-2
.3 4
计算:(1)
(2)(5
(3)(6
(4)
|
(1)原式=2(
+1)+32
-22
=32
+2;2
(2)原式=(20
-183
+43
)÷15
,3
=20-18+4
,5
=2+4
;5
(3)原式=(3
-2x
)÷3x
,x
=
÷3x
,x
=
;1 3
(4)原式=3
+2
-1+2
=41 4
-2
.3 4