问题
解答题
计算与化简: (1)(
(2)(3
(3)(
(4)
|
答案
(1)原式=4
+3
×21 4
=43
+3 1 2
=3
3;9 2
(2)原式=(6
-3 2 3
-43
)÷23
=3 4 3
÷23
=3
;2 3
(3)原式=1+
-21 2- 3
×3
=1+2+3 3
-2=1+3
;3
(4)原式=2
•3xy
×3x 2
=3x1 y
.3x