问题
解答题
计算或化简: (1)
(2)(
(3)
(4)(2
(5)3(
(6)(-3)0-
(7)
(8)
|
答案
(1)原式=
×42
=8;2
(2)原式=2+1-2
=3-22
;2
(3)原式=
+5
-5 5
=2 5 5
;4 5 5
(4)原式=(4
-3
)×3
=36
×3
=96
;2
(5)原式=3-(2-
)-1=3
;3
(6)原式=1-3
+3
-1+2
-3
=-22
;3
(7)原式=4-
+26
=4+6
;6
(8)原式=2b
×(-ab 3a 2
)×ab
=-a2bab 3b
.ab