问题
填空题
化简下列各式: (1)
(2)
|
答案
(1)
=4ab 6a2bc
=2ab•2 2ab•3ac
;2 3ac
(2)
=x+y x2-y2
=x+y (x+y)(x-y)
.1 x-y
故答案为:
;2 3ac
.1 x-y
化简下列各式: (1)
(2)
|
(1)
=4ab 6a2bc
=2ab•2 2ab•3ac
;2 3ac
(2)
=x+y x2-y2
=x+y (x+y)(x-y)
.1 x-y
故答案为:
;2 3ac
.1 x-y