问题
解答题
计算: (1)
(2)-52-[(-2)3+(1-48×
(3)3
|
答案
(1)原式=
×(-78 5
)×(-3 4
)×(-1 9
)5 13
=-78×3×1×5 5×4×9×13
=-
;1 2
(2)原式=-25-[-8+(1-36)÷(-2)]
=-25-(-8+
)35 2
=-34
;1 2
(3)原式=3
-[8-4÷(1 3
-21 4
)×1 4
]1 2
=3
-(8+1)1 3
=-5
.2 3