(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+3x-2=0
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/19 11:39:17
(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+3x-2=0
解方程
解方程
![(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+3x-2=0](/uploads/image/z/15342752-56-2.jpg?t=%281%29x%5E2-3x%2B1%3D0+%282%292x%5E2%2B6%3D7x+%283%293x%5E2-9x%2B2%3D0+%284%292x%5E2%2B3x-2%3D0)
(1)x^2-3x+1=0
x=(3+√5)/2 x==(3-√5)/2
(2)2x^2+6=7x
x=2 x=3/2
(3)3x^2-9x+2=0
x=(9+√57)/6 x=(9-√57)/6
(4)2x^2+3x-2=0
x=-2 x=1/2
x=(3+√5)/2 x==(3-√5)/2
(2)2x^2+6=7x
x=2 x=3/2
(3)3x^2-9x+2=0
x=(9+√57)/6 x=(9-√57)/6
(4)2x^2+3x-2=0
x=-2 x=1/2
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
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(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
方程(x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x^2+8x+9)+64=0
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值