问题
解答题
计算: (1)
(2)(1-2
(3)(2
(4)(-
|
答案
(1)原式=4
-2
+3 2 2
=2 4
;11 2 4
(2)原式=2(1-2
)=2-43
;3
(3)原式=2
-372
=122
-32
=93
;3
(4)原式=1+
+(2
+1)+2-3
=3
.2
计算: (1)
(2)(1-2
(3)(2
(4)(-
|
(1)原式=4
-2
+3 2 2
=2 4
;11 2 4
(2)原式=2(1-2
)=2-43
;3
(3)原式=2
-372
=122
-32
=93
;3
(4)原式=1+
+(2
+1)+2-3
=3
.2