问题
解答题
计算题 (1)
(2)
(3)(
|
答案
(1)原式=3
-23
+43
=53
;3
(2)原式=3
+32
÷3-2
=32 2
+2
-2
=2 2
;7 2 2
(3)原式=(
)2-(2
)2-(2-2+6
)1 2
=2-6-1 2
=-
.9 2
计算题 (1)
(2)
(3)(
|
(1)原式=3
-23
+43
=53
;3
(2)原式=3
+32
÷3-2
=32 2
+2
-2
=2 2
;7 2 2
(3)原式=(
)2-(2
)2-(2-2+6
)1 2
=2-6-1 2
=-
.9 2