化简:x^2+5x+6/x+2
化简:x平方-x-2/x平方-x-6除以x平方+4x-5/x平方+2x-10
(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简
x/x-3-5x/x^2-x-6计算
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
(5x+1)X(6x+2)
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
2x-6/(x-2)/[5/(x-2)-x-2]