$\ldots \ldots$ is one of the zeros of $p(x) = x^{3} + 7x^{2} + 11x + 5$.

The factorisation of $4 x^{2}+8 x+3$ is

The zero of the zero polynomial is

Divide $p(x)=21+10 x+x^{2}$ by $g(x)=2+x$ and find the quotient and the remainder.

Write the degree of the following polynomial: $x^{8}-6561$.

Which of the following expressions are polynomials in one variable and which are not? State the reason for your answer. If the given expression is a polynomial,state whether it is a polynomial in one variable or not: $5 x^{2}-7 x+3 \sqrt{x}$