6x^2-13x+6
=6(x^2+13x/6+1)
=6(x^2+13x/6+169/144-169/144+1)
=6[(x-13/12)^2-25/144]
=6(x-13/12+5/12)(x-13/12-5/12)
=3(x-2/3)*2(x-3/2)
=(3x-2)(2x-3)
6x^2-13x+6
=6(x^2+13x/6+1)
=6(x^2+13x/6+169/144-169/144+1)
=6[(x-13/12)^2-25/144]
=6(x-13/12+5/12)(x-13/12-5/12)
=3(x-2/3)*2(x-3/2)
=(3x-2)(2x-3)