问题
解答题
计算下列各式. (1)
(2)-14+12×[
|
答案
(1)
×(-3 4
)×(-4)×(-5 7
)1 5
=-(
×4)×(3 4
×5 7
)1 5
=-3×1 7
=-
;3 7
(2)-14+12×[
-(-1 6
)2]3 2
=-1+12×[
-1 6
]9 4
=-1+2-27
=-26.
计算下列各式. (1)
(2)-14+12×[
|
(1)
×(-3 4
)×(-4)×(-5 7
)1 5
=-(
×4)×(3 4
×5 7
)1 5
=-3×1 7
=-
;3 7
(2)-14+12×[
-(-1 6
)2]3 2
=-1+12×[
-1 6
]9 4
=-1+2-27
=-26.