问题
解答题
化简: (1)-
(2)8
(3)
(4)
|
答案
(1)原式=-
=-6(19+17)(19-17)
;2
(2)原式=8
=413 4
;13
(3)原式=1 2x
;3xy
(4)原式=
•3(a-2)1 a-2
=32a-4
.2a-4
化简: (1)-
(2)8
(3)
(4)
|
(1)原式=-
=-6(19+17)(19-17)
;2
(2)原式=8
=413 4
;13
(3)原式=1 2x
;3xy
(4)原式=
•3(a-2)1 a-2
=32a-4
.2a-4