数学问题,求解答
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数学问题,求解答
数学问题,求解答
数学问题,求解答
n(n+1)(n+2)(n+3)+1
=n(n+3)(n+1)(n+2)+1
=(n²+3n)(n²+3n+2)+1
=(n²+3n)²+2(n²+3n)+1
=[(n²+3n)+1]²
=(n²+3n+1)²
得证
数学问题,求解答
数学问题,求解答
数学问题,求解答
n(n+1)(n+2)(n+3)+1
=n(n+3)(n+1)(n+2)+1
=(n²+3n)(n²+3n+2)+1
=(n²+3n)²+2(n²+3n)+1
=[(n²+3n)+1]²
=(n²+3n+1)²
得证