2x-x^2>1/3怎么算

(x+2)(x+3)-(x+6)(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-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2),怎么算? x(x-2)+m(1-x)=3怎么算 y+(1+x)(2+x)(3+x)导数怎么算, 1+x+x^2+x^3+.+x^99+x^100同上,怎么算?求解! (x-1)(x+2)(x+3)(x+6)怎么做? (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? 1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)化简怎么算? (x-3)/(x^2+3x+2)×(x^2)/(x^2-4x+3)怎么算？ x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1怎么分解因式 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 2x平方-3【2x-2(-x平方+2x-1)-4】 怎么算? 2/x+2/(x+3)+(x-2)/(x+3)=1怎么算 1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+.1/(x+99)(x+100)怎么算拜托了各位 x^3+x^2-x-1除以x^2+1怎么算