Write the following polynomials in the standard form. Also write the degree.

$x^2+4+3x^3-7x$

Write the following polynomials in the standard form. Also write the degree.

$\left(x^2-1\right)\left(x^2+4\right)$

Write the following polynomials in the standard form. Also write the degree.

$\left(x+\frac{5}{6}\right)\left(x+\frac{6}{5}\right)$

Write the following polynomials in the standard form. Also write the degree.

$\left(x^3-7\right)(x^3-8)$

Divide the following:

$14x^4{y}^{5}z$ by $7x^2{y}^3$

Divide the following:

$20x^8{y}^6{z}^3$ by $4x^3{y}^{3}z$

Divide the following:

$-105a^9{b}^7$ by $5a^6{b}^4$.

Divide the following:

$152a^2{b}^3{c}^4$ by $-8b^2{c}^2$

Divide the following:

$-88p^4{q}^5{r}^2$ by $-11p^2{q}^3$.