3x*x*x+m*x*x+n*x+42能被x*x-5x+6整除,则m+n=()如题

3x*x*x+m*x*x+n*x+42能被x*x-5x+6整除,则m+n=()如题 若多项式X*X*X-8X*X+X+42能被X-3X整除,则X*X*X-8X*X+X+42的因式分解为 若x^2+nx+m能因式分解为(x+2)(x-3),则m+n= 如果4x^3 + 9x^2 +mx+n能被(x+3)(x-1)整除,求m^n 已知集合M={x/3+2x-x^2>0},N={x/x (x-m)(x-1)=x²-3x+n,则m+n的值为? 若多项式x²-4x+3=(x+m)(x+n),则m+n= (x-5)(x-n)是X^2-3x+m因式分解的结果求M,N x^m×(x^n)^3÷[x^(m-1)×2x^(n-1)]= 多项式x^2-4x+3=(x+m)(x+n),m=?n=? (2x-3)(x-n)=2x^2+5x+m求m与n 若x^m=6,x^n=9,则(2x^3m*x^2n) / (x^m*x^n)^2*x^n 解方程[(m+x)/n]+3=(x-n)/m 若m、n、p都是正整数,求证x^3m+x^(3n+1)+x^(3 p+2)能被x^2+x+1整除 (-x)^3x^n-1+x^2n(-x)^3 若(x+m)(x+2)等于x*x-6x+n,则m等于------,n等于------- 分解因式：(x+y)(x-y)-(x+y)² 3m(m-n)+6n(n-m) x(x-y)-y(y-x) (x-3)²+（3x-9)(x+y)(x-y)-(x+y)² 3m(m-n)+6n(n-m) x(x-y)-y(y-x) (x-3)²+（3x-9) 证明(x+3)^2n-1 + (x+5)^m-1 能被(x+4)整除 ,m.n为正整数