12(x^2-6x+9)=36+24√3+12
12x^2-72x+108=48+24√3
12x^2-72x+108-48-24√3=0
12x^2-72x+60-24√3=0
12(x^2-6x+5-2√3)=0
x^2-6x+5-2√3=0
