Which of the Following Functions Are Quadratic?
A) $f(m)=\sqrt{3} m^{2}+\frac{2 m}{m^{2}}-2$

Multiple Choice

Which of the following functions are quadratic?

A) $f(m) =\sqrt{3} m^{2}+\frac{2 m}{m^{2}}-2$
B) $K(t) =(5 t-2) ^{2}-6 t--27$
C) $h(t) =\frac{-7 t^{3}}{t}-3 t+10$
D) $f(x) =(x-5) ^{2}-x^{2}$
E) $M(x) =3(4 x-5) (x+6)$