2(x-1)²-8=0 ,x²-8x-2=0,x²-6=7x,2x²-6x+1=

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/18 10:35:45

2(x-1)²-8=0 ,x²-8x-2=0,x²-6=7x,2x²-6x+1=0,3x²+8x-2=0.

2(x-1)²-8=0 ,
(x-1)²-4=0
(x-1-2)(x-1+2)=0
(x-3)(x+1)=0
x=3或x=-1
x²-8x-2=0,
x²-8x+16-16-2=0
(x-4)²-18=0
(x-4-3√2)(x-4+3√2)=0
x=4+3√2或x=4-3√2
x²-6=7x,
x²-7x-6=0
x²-7x+49/4-49/4-6=0
(x-7/2)²-73/4=0
(x-7/2)²-73/4=0
(x-7/2-√73/2)(x-7/2+√73/2)=0
x=7/2+√73/2或x=7/2-√73/2
2x²-6x+1=0
x²-3x+1/2=0
x²-3x+9/4-9/4+1/2=0
(x-3/2)²-7/4=0
(x-3/2-√7/2)(x-3/2+√7/2)=0
x=3/2+√7/2或x=3/2-√7/2
3x²+8x-2=0
x²+8x/3-2/3=0
x²+8x/3+16/9-16/9-2/3=0
(x+4/3)²-22/9=0
(x+4/3-√22/3)(x+4/3+√22/3)=0
x=-4/3+√22/3或x=-4/3-√22/3

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 2(x-1)²-8=0 ,x²-8x-2=0,x²-6=7x,2x²-6x+1= 解方程 x(x+1)(x²-2x-4)=0 x³-2x+1=0 x的4次方+8x³+14x 已知函数f(x)=x²+x+1,x≥0；2x+1,x x²+2x=0 3x²-6x-2=0 4x²+4x-1=-10-8x 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 解方程x²+x-6分之5x+x²-x-12分之2x-5=x²-6x+8分之7x-10 解方程.（5x/x²+x-6）+（2x-5/x²-x-12）=7x-10/x²-6x+8 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), x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)谁会解这道方程题分式方程.x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)