Answer:
1]Yes it is a Quardtic equation.
Reason :-
In the Equation we may see that the highest degree is 2. So, it's a Quardtic equation.
2]No,Because when we will try to solve by Factorisation method some square roots like √3, etc. may come
3]Yes
Lets solve
[tex] \bf \: {m}^{2} - 5m + (3 + 3) = 0[/tex]
[tex] \sf \: {m}^{2} - 5m + 6 = 0[/tex]
[tex] \sf \: {m}^{2} - (3m + 2m) + 6 = 0[/tex]
[tex] \sf {m}^{2} - 3m + 2m + 6 = 0[/tex]
[tex] \sf(m + 2)(m + 3)[/tex]
[tex] \sf \: m - 3 \: or \: m - 2[/tex]