神马作文网化简|x-5|+|x+10|-|x-15|,
化简|x-5|+|x+10|-|x-15|,
|x+5|+|x-7|+|x+10|化简
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
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-12)+(x+7)(x+8)+(x+5)(x-10),化简.
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
化简：|x+5|+|x－7|+|x+10|
x的平方-2x+1=15 ; x(2x-5)=4x-10 ; x的平方+5x+7=3x=11
化简：[x+1 -(15/x-1)] * (x-4/x-1)
x^2+2x/3x^2+x-10化简