怎么简算(3x-5)^2(3x+5)^2

(x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? 3x-(5x-2x)怎么化简 (x^10-x^5+1)/(x^2+x+1) 怎么算?(x^10-x^5+1)/(x^2+x+1)=（x^8-x^7+x^5-x^4+x^3-x+1) 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/x-3-x-4/x-5怎么做? 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+3|+|2-X|>5怎么做? x^3(x-5)^2怎么求导? 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+4/5-x+5=x+3/3-x-2/2 怎么算 2x^2+7x+5乘以x^2-2x-3怎么算 （2x平方-9x+5）x（3x-1）怎么化简 2x-3/x+3-2x/5怎么做 (x^2-3x+1)^3怎么算出x^6-9x^5+30x^4-45x^3+30x^2-9x+1 3x+2x-x+5=33怎么解? (2x 3)*x等于5x-4怎么做 （x-3)/(5x-x^2)dx积分怎么做?