问题
解答题
(1)(2
(2)
(3)
(4)-
(5)
(6)
|
答案
(1)(2
-348
)÷27
,6
=2
-38
,9 2
=4
-2 9 2
=-2 1 2
;2
(2)
-(2+32
)2=42
-4-42
-2=-6;2
(3)
÷1 2 3
×2 1 3
=1 2 5
=1;
×5 3
×3 7 7 5
(4)-15 8
÷2 10 27
,25 12a3
=-
×15 8
,
×64 27 12a3 25
=-
×15 8
×8 3
,2a a 5
=-2a
;a
(5)2 π
+x3
-x 2
-x 8 x 3
,1 x
=
+2x x π
-2x 2
-2x 4
,x 3
=(
-2x π
)1 3
+x
;2x 4
(6)
+(-2)2×3 3
-1 8
+(3
-2005
)0=2004
+4×3
-2 4
+1=3
+1.2