9(x-1)^2=4(x+1)^2因式分解
问题描述：
9(x-1)^2=4(x+1)^2因式分解
答
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
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