9(x-3)²=4(x-2)²
9(x-3)²-4(x-2)²=0
[3(x-3)-2(x-2)]*[3(x-3)+2(x-2)]=0
(x-5)(5x-13)=0
x1=5,x2=13/5能发照片吗？那有点8看不懂