化简16^n+2×4^n-1/8^2n×5^2n+4×2^n/5^2n+3×2^n+3

化简16^n+2×4^n-1/8^2n×5^2n+4×2^n/5^2n+3×2^n+3 化简：2^4n+1-(4^2n+16^n) 化简:2^4n+1-(4^2n+16^n) 化简：1/(n+1)(n+2)+1/(n+2)(n+3)+1/(n+3)(n+4) 1/（m-n）-1/（m+n）-2n/（m^2+n^2)-4n^3/m^4+n^4)-8n^7/(m^8+n^8)-16n^15/(m^16+n^16)+32n^31/(n32-m32) [3n(n+1)+n(n+1)(2n+1)]/6+n(n+2)化简 [3n(n+1)+n(n+1)(2n+1)]/6+n(n+2)化简 化简n分之n-1+n分之n-2+n分之n-3+.+n分之1 化简n分之n-1+n分之n-2+n分之n-3+.+n分之1 化简(n+1)(n+2)(n+3) -n^3+8n^2-16n 2^n/n*(n+1) 证明不等式：(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n 根号【（2n+1）/（n²+n）】平方-4/（n平方+n ）化简 M=(N-1)×1+(N-2)×2+(N-3)×4+(N-4)×8+(N-5)×16+(N-6)×32+(N-7)×64.化简后公式M=? 化简[n^2+(n+1)^2]/n(n+1) 化简额 lim(n+3)(4-n)/(n-1)(3-2n) lim(n^3+n)/(n^4-3n^2+1)