(-x+5)(x-3)(x+6)怎么算

(-x+5)(x-3)(x+6)怎么算 (x+2)(x+3)-(x+6)(x-1) 怎么算? x^2-6x+9/x^2-x-6 * x^2-7x+10/x^2-9 * x+3/2(x-5)怎么算? (x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1怎么分解因式 *-----------------------------------------------*| 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^2-3x+1)^3怎么算出x^6-9x^5+30x^4-45x^3+30x^2-9x+1 1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少 (X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2),怎么算? 1/(x+1)(x+2)+1/(x+3)(x+4)+1/(x+5)(x+6)+1/(x+7)(x+8)+1/(x+9)(x+10)怎么解 3x≤5x怎么算 x-1+x-2+x-3+x-4+x-5+x-6+x-7=77怎么解速度! 分解因式：(x-1)(x+6)-5x 怎么算?、、、、 3x-5x=8x怎么算 (y-x)(x-y)^3(y-x)^5怎么算 lim (x->1) (x^2-6x+8)/(x^2-5x+4) 怎么算? X X 8 9 5 X X X 6 九宫格怎么算