Find the Asymptotes p(x)=(7x^4-18x)/(2x^4+14x^3)

Find where the expression ${\displaystyle \frac{7x^4-18x}{2x^4+14x^3}}$ is undefined.

Since ${\displaystyle \frac{7x^4-18x}{2x^4+14x^3}}$${\displaystyle \to }$${\displaystyle \infty }$ as ${\displaystyle x}$${\displaystyle \to }$${\displaystyle -7}$ from the left and ${\displaystyle \frac{7x^4-18x}{2x^4+14x^3}}$${\displaystyle \to }$${\displaystyle -\infty }$ as ${\displaystyle x}$${\displaystyle \to }$${\displaystyle -7}$ from the right, then ${\displaystyle x=-7}$ is a vertical asymptote.

Since ${\displaystyle \frac{7x^4-18x}{2x^4+14x^3}}$${\displaystyle \to }$${\displaystyle -\infty }$ as ${\displaystyle x}$${\displaystyle \to }$${\displaystyle 0}$ from the left and ${\displaystyle \frac{7x^4-18x}{2x^4+14x^3}}$${\displaystyle \to }$${\displaystyle -\infty }$ as ${\displaystyle x}$${\displaystyle \to }$${\displaystyle 0}$ from the right, then ${\displaystyle x=0}$ is a vertical asymptote.

List all of the vertical asymptotes:

Consider the rational function ${\displaystyle R\left(x\right)=\frac{a{x}^n}{b{x}^m}}$ where ${\displaystyle n}$ is the degree of the numerator and ${\displaystyle m}$ is the degree of the denominator.

Find ${\displaystyle n}$ and ${\displaystyle m}$.

Since ${\displaystyle n=m}$, the horizontal asymptote is the line ${\displaystyle y=\frac{a}{b}}$ where ${\displaystyle a=7}$ and ${\displaystyle b=2}$.

There is no oblique asymptote because the degree of the numerator is less than or equal to the degree of the denominator.

This is the set of all asymptotes.