问题
解答题
计算下列各式的值: (1)(0.027)
(2)7
(3)(a
|
答案
(1)(0.027)
-(61 3
)1 4
+2561 2
+(23 4
)2
-3-1+π0=[(2 3
)3]3 10
-[(1 3
)2]5 2
+[44]1 2
+[23 4
]3 2
-2 3
+1=1 3
-3 10
+43-5 2
+1=641 3
.7 15
(2)7
-33 3
-63 24
+3 1 9
=7×34 3 3 3
-3(3×23)1 3
-6×3-1 3
+2 3
=7×34 3 4 3
-6×31 3
-2×3×3-1 3
+32 3
=2×31 3
-2×31 3
=0.1 3
(3)(a
•b-8 5
)-6 5
•1 2
÷5 a4
=(a-5 b3
•b4 5
)•a3 5
÷b4 5
=a0•b0=1.3 5