计算3x(x-4)^2-6x^2(4-x)

计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3) 2x*4x-3x计算 x^2+x-6分之x^2+3x-x^2-4分之x+2计算 *-----------------------------------------------*| 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 || 计算（x*x+4x+5）/（x+2）-（x*x+6x+10）/（x+3）+1 计算：(-x^4)^3-(x^2)^6 计算2x X 4x--3x= 计算(x+1)(x+2)(x+3)(x+4) 如何计算 (x+1)(x+2)(x+3)(x+4) 计算(X-1)(X-2)(X-3)(X-4) (x-1)(x-2)(x-3)(x-4)-24计算 x/x-3-5x/x^2-x-6计算 计算(6x^2-4x)/(3x-2) 计算：2x-6/4-4x+x^2除以（x+3）乘以x^2+x-6/x+3 x^2-4x+4分之2x-6÷(x-+3)×3-x分之x^2+x-6计算 计算:(2x-6)/(4-4x+x^2)除以(x+3)乘以(x^2+x-6)/(3-x) 计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6 计算(x-2)/(x^2+3x+2)+6/(2+x-x^2-(x-10)/(x^2-4)