1=1/3X+X怎么算?

x(x-2)+m(1-x)=3怎么算 (x+2)(x+3)-(x+6)(x-1) 怎么算? (x^10-x^5+1)/(x^2+x+1) 怎么算?(x^10-x^5+1)/(x^2+x+1)=（x^8-x^7+x^5-x^4+x^3-x+1) (2x-1)(2x+1)+3(x+2)(x-2)=(7x-1)(x+1)怎么算? (x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? ｜x-3|-|x+1|>3怎么算 3^X-1>0 X怎么算 (x-3)(x-1)怎么算 9X=1/X怎么算 X+(X-1)=90,怎么算? 2/x+2/(x+3)+(x-2)/(x+3)=1怎么算 (2x+1)²-(x+3)(3-x)=6x怎么简便算? x乘(x+1)乘(x+2)乘(x+3)=360怎么算 x(x+1)(x+2)(x+3)=3024怎么算呀 y+(1+x)(2+x)(3+x)导数怎么算, 1.5x-x=x(1+20%)怎么算? 1.5X+20=1X（50-X)怎么算?