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32+132−1+52+152−1+72+172−1+92+192−1+112+1112−1+132+1132−1=

题目详情
32+1
32−1
+
52+1
52−1
+
72+1
72−1
+
92+1
92−1
+
112+1
112−1
+
132+1
132−1
=
▼优质解答
答案和解析
32+1
32−1
+
52+1
52−1
+
72+1
72−1
+
92+1
92−1
+
112+1
112−1
+
132+1
132−1

=6+
2
2×4
+
2
4×6
+
2
6×8
+
2
8×10
+
2
10×12
+
2
12×14

=6+
1
2
1
4
+
1
4
1
6
+
1
6
1
8
+
1
8
1
10
+
1
10
1
12
+
1
12
1
14

=6+
1
2
1
14

=6
3
7