[tex](3x^2-4x+2)(6-4x+3x^2)+5\ \textgreater \ 0\\
Notam\ 3x^2-4x=a\\
(a+2)(a+6)+5\ \textgreater \ 0\\
a^2+2a+6a+12+5\ \textgreater \ 0\\
a^2+8a+17\ \textgreater \ 0\\
a^2+8a+16+1\ \textgreater \ 0\\
(a+4)^2+1\ \textgreater \ 0\\
(3x^2-4x+4)^2+1\ \textgreater \ 0 (A)[/tex]