问题 解答题
计算:
(1)-(+5)-
1
16
+(-2)-2-(
3
-2)0

(2)
3x+6
x2+4x+4
÷
x-2
x+2
-
1
x-2
答案

(1)-(+5)-

1
16
+(-2)-2-(
3
-2)0

=-5-

1
4
+
1
4
-1

=-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

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