计算:(3a^(n+1)-6a^n+9a^(n-1)/(1/3a^(n-1)

计算:(3a^n+2+6a^n+1-9^n)÷3a^n-1 分式 计算：a^(2n+1)-6a^(2n)+9a^(2n-1) / a^(n+1)-4a^n+3a^(n-1) 计算:(3a^(n+1)-6a^n+9a^(n-1)/(1/3a^(n-1) 计算(3a^n+1-6a^n+9a^n-1)/(1/3a^n-2) 计算：(6a^n+2-9a^n+1+3a^n-1)÷3a^n-1 (3a^（n+1）+6a^（n+2）-9a^n)/3a^（n-1）是计算 1.因式分解6（a-b)^2减8（a-b)^32.计算3a^(n+1)-6a^(n)+9a^(n-1)除以 三分之一a^(n-1 (3a^n+1+6a^n+2-9a^n)/3a^n-1 (6a^n+2 +3a^n+1 -9a^n)/3a^n-1 计算(3a的n+1次方-6a的n次方+9a的n-1次方)除以(3分之1a的n-2次方) 计算:(a^n+1)^2×(-a^3)^2n+1 计算:(a(1)+a(2)+.+a(n-1))(a(2)+a(3)+.+a(n))-(a(2)+a(3)+.+a(n-1))(a(1)+a(2)+.a(n)) 计算a^n(a^n+1+a^n+a^n-1)-a^n-1(a^n+1+a^n-a^n-1) 计算a^2n+1-6a^2n+9a^2n-1/a^2-9除以a^n+1+4a^n+4a^n-1/a^2-4 计算(6a^(n+2)-8a^n)/(-1/2a^(n-1)) 计算 (3A^N+2*B-2A^N*B^N-1+3B^N)*5A^N*B^N+3(N为正整数,n＞1) (3a^n+1+6a^n+2-9a^n)/3a^n-1是计算题 （6a^n+2+3a^n+1-9a^n)÷1/2a^n-1