问题
解答题
计算: (1)
(2)(
(3)
(4)
|
答案
(1)原式=
=2a+5-a+1+2a-3 2(a+1)
=3(a+1) 2(a+1)
;3 2
(2)原式=
×a6b3 -c6
=-c2 a6
;b3 c4
(3)原式=
•(a+1)(a+4) (a-2)(a-3)
=(a-2)(a-4) (a+4)(a-4)
;a+1 a+3
(4)原式=
÷2(x-3) x-2 -(x+3)(x-2) x-2
=
•2(x-3) x-2 x-2 -(x+3)(x-3)
=-
.2 x+3