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解方程:2x2+4x-3=0
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解方程xx﹣2=2x+1.
解方程xx-2+x-2=0
用配方法解方程x2-2x-24=0.
解方程x+1x﹣2=2xx﹣2
解方程x2-3x+5+6x2-3x=0
解方程2x2﹣4x﹣30=0.
解方程x+1x+2=xx-1
解方程3xx-2=x-2
解方程xx﹣2+x﹣2=0.
解方程3xx﹣2=22﹣x
解方程x﹣2=xx﹣2
用配方法解方程x2-2x-24=0.
我们规定若关于x的一元一次方程ax=b的解为b﹣a则称该方程为差解方程例如2x=4的解为2且2=4﹣
解方程2+x=2x+5.
下列解方程的过程中正确的是
x
2
=-2,解方程,得x=±
(x-2)
2
=4,解方程,得x-2=2,x=4
4(x-1)
2
=9,解方程,得4(x-1)=±3,x
1
=
,x
2
=
(2x+3)
2
=25,解方程,得2x+3=±5,x
1
=1,x
2
=-4
理解同解方程的定义再解题1同解方程的定义为如果两个方程的解相同那么这两个方程叫同解方程反之如果两个方
解方程xx+1=2x+2
解方程xx-2=2-x
用配方法解方程x2﹣2x﹣24=0.
阅读下面的解题过程解方程4x-12-104x-1+24=0解把4x-1视为一个整体设4x-1=y则原
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