用配方法解2个方程(1-y)(3y-2)=y(y-3)(1-y)(3y-2)=y(y-3)2/3x^2-4/9x-1/3=0

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用配方法解2个方程(1-y)(3y-2)=y(y-3)(1-y)(3y-2)=y(y-3)2/3x^2-4/9x-1/3=0用配方法解2个方程(1-y)(3y-2)=y(y-3)(1-y)(3y-2)

用配方法解2个方程(1-y)(3y-2)=y(y-3)(1-y)(3y-2)=y(y-3)2/3x^2-4/9x-1/3=0
用配方法解2个方程(1-y)(3y-2)=y(y-3)
(1-y)(3y-2)=y(y-3)
2/3x^2-4/9x-1/3=0

用配方法解2个方程(1-y)(3y-2)=y(y-3)(1-y)(3y-2)=y(y-3)2/3x^2-4/9x-1/3=0
(1)展开后,整理得到:2y^2-4y+1=0
2(y^2-2y+1)-2+1=0
2(y-1)^2=1
(y-1)^2=0.5
y-1=正负2分之根号2
y=1+正负2分之根号2
(2)通分之后得到:3x^2+4x-6=0
3(x^2+0.75x+9/64)-6-27/64=0
(x-3/8)^2=137/64
x-3/8=正负根号137/8
x=3/8+正负根号137/8