4(x+2)^2=9(2x-1)^2
[2(x+2)]^2-[3(2x-1)]^2=0
[2(x+2)+3(2x-1)][2(x+2)-3(2x-1)]=0
(2x+4+6x-3)(2x+4-6x+3)=0
(8x+1)(7-4x)=0
x1=-1/8
x2=7/4