计算x^2-5x+6/x^2-1/x^2+x/x-3

x/x-3-5x/x^2-x-6计算 计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6 计算x^2-5x+6/x^2-1/x^2+x/x-3 *-----------------------------------------------*| 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 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 计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3) 计算：（x+1)(x-2)(x-3)(x-6) 计算：x(x^2+x-1)-(x^2-x+1) 计算5(x^2+x-3)-4x(6+x)+x(4-x)=02x(x-1)-x(2x-5) 计算:(4x^4-6x^2+2)(5x^3-2x^2+x-1), 计算：(1)/(x-3)÷(x+2)/(x^2-9)-(1)/(x^2+5x+6) 计算:[(x+2)/(x+3) - (x+1)/(x+2) + (x+4)/(x+5) - (x+3)/(x+4) / (x^2 + 7x + 13)/(x^2 + 8x + 15) 1.用公式计算：COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对 计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9 计算：4x(x^2-2x-1)+x(2x+5)(5-2x) 2x/x-1+1/x+3-3x+5/x^2+2x-3计算, 计算：x^2-5x+6/x^2-x-2x^2-7x+12/x^2-2x-8 计算：x^2-5x+6/x^2-x-2x^2-7x+12/x^2-2x-8