问题
解答题
计算: (1)5
(2)
(3)
|
答案
(1)原式=5
÷15
=5
+3 5 3
×15
=3
+3 5
=15
(15
-5
)3 2
;75
-755 3 2
(2)原式=
=2
(6
+2
-3
)5 5+2
-56
+2
-3
;5
(3)原式=
+(2-
)25
=|2-(2+
)25
|+|2+5
|=5
-2+2+5
=25
.5