问题
解答题
计算: (1)
(2)3
(3)
(4)
(5)
|
答案
(1)原式=
=77×14
;2
(2)原式=6
=305×10
;2
(3)原式=
=3x•
xy1 3
=xx2y
;y
(4)原式=
=1;15 15
(5)原式=
÷12=18
=3 2 12
.2 4
计算: (1)
(2)3
(3)
(4)
(5)
|
(1)原式=
=77×14
;2
(2)原式=6
=305×10
;2
(3)原式=
=3x•
xy1 3
=xx2y
;y
(4)原式=
=1;15 15
(5)原式=
÷12=18
=3 2 12
.2 4