几道很简单的初二一元二次方程,1.x方-2mx+m方-n方=02.x方+3a方=4ax-2a+13.x方+mx+n=04.(x方+3x)方-2（x方+3）-8=05.a方（x方-x+1）-a(x方-1)=（a方-1）x6.6x方-3倍根号3x=2根号2x-根号6（X不是在根号里面 是乘的关系）

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1.x^2-2mx+m^2-n^2=0
(x-m-n)(x-m+n)=0
x1=m+n,x2=m-n
2.x^2+3a^2=4ax-2a+1
x^2-4ax+3a^2+2a-1=0
(x-2a)^2-(a-1)^2=0
(x-2a+a-1)(x-2a-a+1)=0
x1=a+1,x2=3a-1
3.x^2+mx+n=0
x1=[-m+√(m^2-4n)]/2
x2=[-m-√(m^2-4n)]/2
4.(x^2+3x)^2-2（x^2+3）-8=0
(x^2+3x-4)(x^2+3x+2)=0
(x+4)(x-1)(x+1)(x+2)=0
x1=-4,x2=1,x3=-1,x4=-2
5.a^2（x^2-x+1）-a(x^2-1)=（a^2-1）x
(a^2-a)x^2+(1-2a^2)x+a^2+a=0
a(a-1)x^2+(1-2a^2)x+a(a+1)=0
[ax-(a+1)]*[(a-1)x-a]=0
x1=1+1/a,x2=-1-1/(a-1)
6.6x^2-3√3 x=2√2 x-√6
6x^2-(2√2+3√3) x+√6=0
(2x-√3)(3x-√2)=0
x1=(√3)/2,x2=(√2)/3