观察下列运算,1*2*3*4+1=25=5的平方2*3*4*5+1=121=11的平方3*4*5*6+1=361=19的平方.9*10*11*12+1=_____=_____的平方(n+1)*(n+2)*(n+3)*(n+4)+1=_____,并说明理由
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![观察下列运算,1*2*3*4+1=25=5的平方2*3*4*5+1=121=11的平方3*4*5*6+1=361=19的平方.9*10*11*12+1=_____=_____的平方(n+1)*(n+2)*(n+3)*(n+4)+1=_____,并说明理由](/uploads/image/z/11494816-16-6.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E8%BF%90%E7%AE%97%2C1%2A2%2A3%2A4%2B1%EF%BC%9D25%EF%BC%9D5%E7%9A%84%E5%B9%B3%E6%96%B92%2A3%2A4%2A5%2B1%EF%BC%9D121%EF%BC%9D11%E7%9A%84%E5%B9%B3%E6%96%B93%2A4%2A5%2A6%2B1%EF%BC%9D361%EF%BC%9D19%E7%9A%84%E5%B9%B3%E6%96%B9.9%2A10%2A11%2A12%2B1%EF%BC%9D_____%3D_____%E7%9A%84%E5%B9%B3%E6%96%B9%28n%2B1%29%2A%28n%2B2%29%2A%28n%2B3%29%2A%28n%2B4%29%2B1%3D_____%2C%E5%B9%B6%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1)
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