问题
解答题
计算: (1)1
(2)-9÷3+(
(3)(2
|
答案
(1)1
×[3×(-1 2
)2-1]-2 3
×(-2)31 3
=
×(3×3 2
-1)-4 9
×(-8)1 3
=
×3 2
+1 3
×81 3
=
;19 6
(2)-9÷3+(
-1 2
)×12+322 3
=-3-
×12+91 6
=4;
(3)(2
-31 3
+14)÷(11 2
)×(-1)2n1 6
=(
-7 3
+14)×7 2
×16 7
=2-3+12
=11.