1.x

1.用公式计算：COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对 1.x x-0.34x=1. x-0.7x=1. 5.4x+x=1. 1.x-x^2+6 5.4x+x=1. X-0.1X=1. 132%x-x=1. x-0.75x=1. 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1.x/9+x=62.x/x+1 + x+1/2x = 3 1.(2x-1)(4x²+2x+1))2.（x-1)(x²+x) 用换元法分解因式（x*x+2x+4)(x*x+2x+2)+1. f(x)+f[(x-1)/x]=2x x不等于0,1.求f(x). 1.化简（x^3-x^2)/(x^2-x)-(1-x^2)/(x+1) f(x)=x+1.当x≥3,f(x)=4-x,当x 十字相乘因式分解的几道计算题1.x^2+2x-82.x^2+3x-103.x^2-x-204.x^2+x-65.2x^2+5x-36.6x^2+4x-27.x^2-2x-38.x^2+6x+89.x^2-x-1210.x^2-7x+1011.6x^2+x+212.4x^2+4x-3