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古希腊著名的毕达哥拉斯学派把1,3,6,10…这样的数称为“三角形数”,而把1,...
古希腊著名的毕达哥拉斯学派把1,3,6,10…这样的数称为“三角形数”,而把1,4,9,16…这样的数称为“正方形数”.从图中可以发现,任何一个大于1的“正方形数”都可以看作两个相邻“三角形数”之和.下列等式中,符合这一规律的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163144553767795/SYS201310221631445537677006_ST/images0.png)
A.13=3+10
B.25=9+16
C.36=15+21
D.49=18+31
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