(1-1/4)x(1-1/9)x(1-1/16)x(1-1/25)x(1-1/36)x(1--1/49)x(1--1/4
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(1+x)(4-x)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+1 x x x+1
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1
(x+1)(x+2)(x+3)(x-4)+36
计算(x+/1x)(x^2+1/x^2)(x^4+1/x^4)(x^8+1/x^8)(x^16+1/x^16)(x^2-
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1