(5/12-2/3-5/6)x(-36)
(x-2)(x-3)+2(x-5)(x+6)-3(x^2-7x+12)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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|
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
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)
x^3×x^5×x+(x^3)^12+4(x^6)^2=?
x^3*x^5*x+(x^3)^12+4(x^6)^2
2x+3x+4x+5x+x+6x+7x=100
5x+9x=6x*2+12 x+9-x/3=4
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x