问题
解答题
计算: (1)
(2)
(3)
|
答案
(1)
=2 3
=
•2 3 3• 3
;6 3
(2)
=20 24
=2 5 2 6
=
•5 6
•6 6
;30 6
(3)
=y x y
=y
•y x
•y y
.xy
计算: (1)
(2)
(3)
|
(1)
=2 3
=
•2 3 3• 3
;6 3
(2)
=20 24
=2 5 2 6
=
•5 6
•6 6
;30 6
(3)
=y x y
=y
•y x
•y y
.xy