端午节申遗成功了吗:初二的数学题,在这先谢谢大哥大姐,速解
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x的n+2次+x的2n+2次-6x的平方=???(n为自然数)
要详细的解题过程
要详细的解题过程
x^(n+2)+x^(2n+2)-6x^2
=x^2(x^n+x^2n-6)
=x^2[(x^n)^2+x^n-6]
=x^2(x^n+3)(x^n-2)
1
x^(n+2)+x^(2n+2)-6x^2
=x^2(x^n+x^2n-6)
=x^2[(x^n)^2+x^n-6]
=x^2(x^n+3)(x^n-2)
1