1.8-8x/1.2-1.2-3x/2-5x-0.6/0.3=2.9

1.8-8x/1.2-1.2-3x/2-5x-0.6/0.3=2.9 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 1.8-8x/1.2-1.3-3x/2=5x-0.4/0.3如何计算结果X=11/5? 1.8-8x/1.2-1.3-3x/2-5x-0.4/0.3=0 (1.8-8x)/1.2-(1.3-3x)/2-(5x-0.4)/0.3=0 1.2(x-2)-3(4x-1)=9(1-x) 2.11x+64-2x=100-9x 3.15-(8-5x)=7x+(4 1.2-5x+x*x2.2x*x-5x+13.x*x-3/2*x-24.-x*x-4x+3 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值 y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), (3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)