6n^3+9n^2+n-1怎么因式分解
因式分解4x^(n+2)-9x^n+6x^(n-1)-x^(n-2)
(3a^n-2)-6a^n+14a^n-1(因式分解) (m-n)^3+4(n-m)
a^(n-1)+3a^(n)-6a^(n-2)因式分解..
(m-n)(m-n+2)-6因式分解
因式分解m^2-(n+1)m+n
(m+2n)-6(m+2n)(2m-n)+9(n-2m) 因式分解
9m²-6m+2n-n²(因式分解,
因式分解 9m^2-n^2+3m-n
[3n(n+1)+n(n+1)(2n+1)]/6+n(n+2)化简
因式分解(n-m)^3(m-n)^2-(m-n)^5
1\n(n+3)+1\(n+3)(n+6)+1\(n+6)(n+9)=1\2 n+18 n为正整数,求n的值
证明不等式:(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n