Write the coefficient of $x^{2}$ in the following polynomials
$7 x^{3}-11 x+24$
From the following polynomials find out which of them has $(x-1)$ as a factor
$x^{3}+4 x^{2}+x-6$
Factorise :
$x^{2}+9 x+18$
Write whether the statement are True or False. Justify your answer.
The degree of the sum of two polynomials each of degree $5$ is always $5 .$
The zero of polynomial $p(x)=b x+m$ is $\ldots \ldots \ldots$