1.25(x-2)^2=4 2.x^2-x-20=0 3.9x^2-6x+1=(x-1)^2 4.(x+1)^2-3(x

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/05 22:56:44

1.25(x-2)^2=4 2.x^2-x-20=0 3.9x^2-6x+1=(x-1)^2 4.(x+1)^2-3(x+1)+2=0 5.3(x-2)^2-2(2-x)=0

1.5(x-2)=±2,则x=2.4或x=1.6
2.(x+4)(x-5)=0,则x=-4或x=5
3.(3x-1)²=(x-1)^2,则3x-1=±(x-1),则x=0或x=0.5
4.(x+1-2)(x+1-1)=0,则x=1或x=0
5.[3(x-2)+2](x-2)=0,则x=4/3或x=2

x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 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的值已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) (x+2)(x-3)(x-6)(x-1)=0 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), （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8 1x+2x+3x+4x+5x+6x+7x…+99x=100 (X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7) 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x)