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
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![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](/uploads/image/z/11905992-0-2.jpg?t=%E5%87%A0%E9%81%93%E5%BE%88%E7%AE%80%E5%8D%95%E7%9A%84%E5%88%9D%E4%BA%8C%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%2C1.x%E6%96%B9-2mx%2Bm%E6%96%B9-n%E6%96%B9%3D02.x%E6%96%B9%2B3a%E6%96%B9%3D4ax-2a%2B13.x%E6%96%B9%2Bmx%2Bn%3D04.%28x%E6%96%B9%2B3x%29%E6%96%B9-2%EF%BC%88x%E6%96%B9%2B3%EF%BC%89-8%3D05.a%E6%96%B9%EF%BC%88x%E6%96%B9-x%2B1%EF%BC%89-a%28x%E6%96%B9-1%29%3D%EF%BC%88a%E6%96%B9-1%EF%BC%89x6.6x%E6%96%B9-3%E5%80%8D%E6%A0%B9%E5%8F%B73x%3D2%E6%A0%B9%E5%8F%B72x-%E6%A0%B9%E5%8F%B76%EF%BC%88X%E4%B8%8D%E6%98%AF%E5%9C%A8%E6%A0%B9%E5%8F%B7%E9%87%8C%E9%9D%A2+%E6%98%AF%E4%B9%98%E7%9A%84)
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
几道很简单的初二一元二次方程,
1.x方-2mx+m方-n方=0
2.x方+3a方=4ax-2a+1
3.x方+mx+n=0
4.(x方+3x)方-2(x方+3)-8=0
5.a方(x方-x+1)-a(x方-1)=(a方-1)x
6.6x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)
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
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
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