Find the zero of the polynomial in each of the following cases

$p(x)=3 x-4$

Determine the degree of each of the following polynomials:

$2 x-1$

Find the value of the polynomial $x^{2}-7 x+12$ at.

$x=\frac{1}{2}$

Expand

$(2 a+3 b)(2 a-5 b)$

Evaluate

$(101)^{2}$

Factorise :

$2 x^{2}-7 x-15$