问题
解答题
化简:(1)
(2)
(3)
|
答案
(1)原式=(
) 2+29
+ (18
) 22
=(
+9
) 22
=
+9 2
=3+
;2
(2)原式=8-2 15 2
=(
-5
) 23 2
=
-5 3 2
=
;
-10 6 2
(3)原式=23-6 10+4 (
-1) 22
=23-6 10+4 (
- 1)2
=23-6
) 22(
+12
=23-6 (2+
)22
=11-6 2
=11-2 18
=(
-9
)22
=3-
.2