# Which of the following is quadratic polynomial?

Question:

Which of the following is quadratic polynomial?

(a) $x+4$

(b) $x^{3}+x$

(c) $x^{3}+2 x+6$

(d) $x^{2}+5 x+4$

Solution:

(d) $x^{2}+5 x+4$

$x^{2}+5 x+4$ is a polynomial of degree 2 . So, it is a quadratic polynomial.