If $p(3)=0$ for polynomial $p(x),$ state one factor of $p(x)$

Give an example of a polynomial, which is:

$(i)$ monomial of degree $1$

$(ii)$ binomial of degree $20$

$(iii)$ trinomial of degree $2$

$x+1$ is a factor of the polynomial

Expand

$\left(x-\frac{1}{2}\right)^{2}$

Classify the following as a constant, linear,quadratic and cubic polynomials:

$5 t-\sqrt{7}$