要使|x+3|+|x+a|+|x-5|有最小的值,求出a的取值范围和代数式的最小值

-x+3a,x |x-a|+|x-3| x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1) 要使x(x+a)+3x-2b=x平方+5x+4成立,则a=?b=? 计算：(x-1)(x^2-4X+3)-x(x^2-5X+2)有过程 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x X^3+5x^2+7x+a有因式X+1,求A,并将原式因式分解 已知x*x*x+8x*x+5x+a能被x*x+3x-10整除,请求出a的值 已知：多项式3*x*x*x+a*x*x+b*x+42能被多项式x*x-5x+6整除,求：a+b的值. matlab中a(x)=x^4+3x^3+9x-18 b(x)=x^5-4x^3-18x+7 c(x)=x^7+6x^5+9x^3-5x^2-2 d(x)=x^9-8x^7+6x^5-4x^4+d(x)=x^9-8x^7+6x^5-4x^4+6x^2+3 求e(x)=a(x)*b(x)*c(x)*d(x) 有一列单项式,:-x,2x,-3x,4x,-5x,6x,-7x.求排列规律 有一列单项式,:-x,2x,-3x,4x,-5x,6x,-7x.求排列规律? (X+5)/3-a 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. a+x/x+1 ,x/x^2-2x-3 ,a/x^2+4x+3 ( A/X-5 ) + ( B/X+2 ) = 5X-4/X^2-3X-10 ^-^ 5x+15/x^2+x-6=A/x-2+B/x-3