4(x-1)^2=9(x-5)^2

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4(x-1)^2=9(x-5)^24(x-1)^2=9(x-5)^24(x-1)^2=9(x-5)^2原等式为:4x^2-8x+4=x^2-10x+253x^2+2x-21=0(x+3)(3x-7)=

4(x-1)^2=9(x-5)^2
4(x-1)^2=9(x-5)^2

4(x-1)^2=9(x-5)^2
原等式为:
4x^2-8x+4=x^2-10x+25
3x^2+2x-21=0
(x+3)(3x-7)=0
x=-3或x=7/3

太麻烦
2(x-1)=正负3(x-5)
正负3x+2x=负正15+2
5x=-13
huo -x=17
所以x=

若a²=b² , 则 a=b 或 a=-b , 同理,此方程如此可解。即
2(x-1)=3(x-5) 或 2(x-1)=-3(x-5)
分别解得 x=13 或 x=17/5

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