问题
解答题
计算: (1)-(+5)-
(2)
|
答案
(1)-(+5)-
+(-2)-2-(1 16
-2)03
=-5-
+1 4
-11 4
=-6
(2)
÷3x+6 x2+4x+4
-x-2 x+2 1 x-2
=
×3(x+2) (x+2)2
-x+2 x-2 1 x-2
=2 x-2
计算: (1)-(+5)-
(2)
|
(1)-(+5)-
+(-2)-2-(1 16
-2)03
=-5-
+1 4
-11 4
=-6
(2)
÷3x+6 x2+4x+4
-x-2 x+2 1 x-2
=
×3(x+2) (x+2)2
-x+2 x-2 1 x-2
=2 x-2