Degree of the polynomial $4 x^{4}+0 x^{3}+0 x^{5}+5 x+7$ is
$7$
$3$
$5$
$4$
Factorise
$4 x^{2}+9 y^{2}+49 z^{2}-12 x y+42 y z-28 z x$
Factorise $x^{2}-7 x+12$ by using the factor theorem.
Which one of the following is a polynomial?
Classify the following as a constant, linear,quadratic and cubic polynomials:
$5 t-\sqrt{7}$
Factorise the following:
$9 x^{2}+4 y^{2}+16 z^{2}+12 x y-16 y z-24 x z$