问题
解答题
(1)(3+
(2)
|
答案
(1)原式=9-5-(3+1-2
)=4-4+23
=23
;3
(2)原式=-(
•2 b
•3 2
)1 3 ab5•a3b• a b
=-1 b
=-a2ba5b5
.ab
(1)(3+
(2)
|
(1)原式=9-5-(3+1-2
)=4-4+23
=23
;3
(2)原式=-(
•2 b
•3 2
)1 3 ab5•a3b• a b
=-1 b
=-a2ba5b5
.ab