(2x+3)(x-4)-(x+2)(x-3)=xx-8
2x^2-5x-12-(x^2-x-6)=x^2-8
2x^2-5x-12-x^2+x+6=x^2-8
x^2-4x-6=x^2-8
-4x-6=-8
-4x=-2
x=1/2