3x^2-x=1,求6x^3+9x^2-3份之17x+2005的答案是多少啊?=11x²-11/3x+2005=11/3(3x²-x)+2005这里是不是跳步了，我不懂啊

已知x=1/x,求x^2-6x+9/x-3/x+3/x^2+6x+9 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X 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 已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10| 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少 求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1 (x-2)(x*x-6x-9)=x(x-5)(x-3),求6x的算术平方根 (x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? *-----------------------------------------------*| 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 || 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值 如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值, x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 求：（x-2）（x²-6x-9）-x（x-3）（x-5）其中x=三分之一.以及x²(x-1)-x(x²+x-1)其中x=二分之一的答案 (x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-4)(2x+5)·0.5 求x (x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X