9(x-1)^2=4(x+1)^2因式分解

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9(x-1)^2=4(x+1)^2因式分解

9(x-1)^2=4(x+1)^2因式分解
9(x-1)^2=4(x+1)^2因式分解

9(x-1)^2=4(x+1)^2因式分解

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

9(x-1)²-4(x+1)²=0

[3(x-1)+2(x+1)][3(x-1)-2(x+1)]=0

(5x-1)(x-5)=0

5x-1=0或x-5=0

x1=1/5   x2=5

[2(x-1)]^2-[5(x+1)]^2=0 (分解因式就没有等于0)
[2(x-1)+5(x+1)][2(x-1)-5(x+1)]=0
(7x+3)(-3x-7)=0
x1=-3/7, x2=-7/3

(3x-3)^2 - (2x+2)^2=0
(3x-3+2x+2)(3x-3-2x-2)=0
(5x-1)(x-5)=0


9(x-1)^2=4(x+1)^2
[3(x-1)]^2=[2(x+1)]^2
[3(x-1)]^2-[2(x+1)]^2=0
[3(x-1)+2(x+1)][3(x-1)-2(x+1)]=0
(5x-1)(x-5)=0
x=1/5.5
或者用绝对值
9(x-1)^2=4(x+1)^2
|3(x-1)|=2(x+1)|
3x-3=2x+2
或者3x-3=-2x-2
x=1/5,5 ㊣㊪