Find the quotient and the remainder when $2 x^{2}-7 x-15$ is divided by

$2 x-3$

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

$1+x+x^{2}$

Evaluate

$(153)^{2}$

Find the quotient and the remainder when $x^{3}+x^{2}-10 x+8$ is divided by

$x+4$

Dividing $x^{3}+125$ by $(x-5),$ the remainder is $\ldots \ldots \ldots .$

Evaluate

$(421)^{2}$