(x-2)(x-6)怎么算?(x+2)(x+6)怎么算

x^2-x-60怎么算x^2-x-6 (x+2)(x+3)-(x+6)(x-1) 怎么算? (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? 6(x+2)=9x(X-2)怎么算 x=0.5,6x+x^2怎么算 (x^4-6x^2+x+7)/(x^2+x-2)怎么算! lim (x->1) (x^2-6x+8)/(x^2-5x+4) 怎么算? 6X-（360X-0.5X）=2×（360X-0.5X）怎么算? (x-1)(x+2)(x+3)(x+6)怎么做? x^2-6x+9/x^2-x-6 * x^2-7x+10/x^2-9 * x+3/2(x-5)怎么算? (x-2)(x-6)怎么算?(x+2)(x+6)怎么算 (x-3)/(x^2+3x+2)×(x^2)/(x^2-4x+3)怎么算？ 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 2*x*x*x-6x*x+18x怎么因式分解? (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 || x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)