问题
解答题
计算、化简 (1)
(2)(2-
(3)(π-2009)0+
(4)(
(5)2
(6)
|
答案
(1)原式=3-2 3 3
=3-2
=1;
(2)原式=(2-
)[(2-5
)+(1+5
)]5
=(2-
)×35
=6-3
;5
(3)原式=1+2
+2-3 3
=3+
;3
(4)原式=1+2
;6
(5)原式=2
×(153
-23
-33
)3
=2
×103 3
=60;
(6)原式=
-20
+33 3 2 3 1 2
=
-23 3 2 3 1 2
=
-23 2 1 2
=11.