问题
解答题
化简:(1)
(2)
|
答案
(1)原式=
-2b2 a+b
+b(a+b) a+b
=a(a+b) a+b
=2b2-ab-b2+a2+ab a+b
;a2+b2 a+b
(2)原式=
+2x+1 4x-1
+x+1 4x-1
=5x-4 4x-1
=2.8x-2 4x-1
化简:(1)
(2)
|
(1)原式=
-2b2 a+b
+b(a+b) a+b
=a(a+b) a+b
=2b2-ab-b2+a2+ab a+b
;a2+b2 a+b
(2)原式=
+2x+1 4x-1
+x+1 4x-1
=5x-4 4x-1
=2.8x-2 4x-1