Algebra Examples

$y = \frac{3 x^{6} - 7 x + 9}{7 x^{2} + 7 x + 9}$

Step 1

Find where the expression $\frac{3 x^{6} - 7 x + 9}{7 x^{2} + 7 x + 9}$ is undefined.

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Step 2

The vertical asymptotes occur at areas of infinite discontinuity.

No Vertical Asymptotes

Step 3

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

1. If $n < m$ , then the x-axis, $y = 0$ , is the horizontal asymptote.

2. If $n = m$ , then the horizontal asymptote is the line $y = \frac{a}{b}$ .

3. If $n > m$ , then there is no horizontal asymptote (there is an oblique asymptote).

Step 4

Find $n$ and $m$ .

$n = 6$

$m = 2$

Step 5

Since $n > m$ , there is no horizontal asymptote.

No Horizontal Asymptotes

Step 6

Find the oblique asymptote using polynomial division.

Tap for more steps...

Step 6.1

Set up the polynomials to be divided. If there is not a term for every exponent, insert one with a value of $0$ .

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

Step 6.2

Divide the highest order term in the dividend $3 x^{6}$ by the highest order term in divisor $7 x^{2}$ .

$\frac{3 x^{4}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

Step 6.3

Multiply the new quotient term by the divisor.

$\frac{3 x^{4}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

Step 6.4

The expression needs to be subtracted from the dividend, so change all the signs in $3 x^{6} + 3 x^{5} + \frac{27 x^{4}}{7}$

$\frac{3 x^{4}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

Step 6.5

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$\frac{3 x^{4}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

Step 6.6

Pull the next terms from the original dividend down into the current dividend.

$\frac{3 x^{4}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

Step 6.7

Divide the highest order term in the dividend $- 3 x^{5}$ by the highest order term in divisor $7 x^{2}$ .

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

Step 6.8

Multiply the new quotient term by the divisor.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

Step 6.9

The expression needs to be subtracted from the dividend, so change all the signs in $- 3 x^{5} - 3 x^{4} - \frac{27 x^{3}}{7}$

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

Step 6.10

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

Step 6.11

Pull the next terms from the original dividend down into the current dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

Step 6.12

Divide the highest order term in the dividend $- \frac{6 x^{4}}{7}$ by the highest order term in divisor $7 x^{2}$ .

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

Step 6.13

Multiply the new quotient term by the divisor.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

Step 6.14

The expression needs to be subtracted from the dividend, so change all the signs in $- \frac{6 x^{4}}{7} - \frac{6 x^{3}}{7} - \frac{54 x^{2}}{49}$

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

Step 6.15

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

Step 6.16

Pull the next terms from the original dividend down into the current dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

Step 6.17

Divide the highest order term in the dividend $\frac{33 x^{3}}{7}$ by the highest order term in divisor $7 x^{2}$ .

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

Step 6.18

Multiply the new quotient term by the divisor.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

Step 6.19

The expression needs to be subtracted from the dividend, so change all the signs in $\frac{33 x^{3}}{7} + \frac{33 x^{2}}{7} + \frac{297 x}{49}$

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

Step 6.20

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

Step 6.21

Pull the next terms from the original dividend down into the current dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

$9$

Step 6.22

Divide the highest order term in the dividend $- \frac{177 x^{2}}{49}$ by the highest order term in divisor $7 x^{2}$ .

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$\frac{177}{343}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

$9$

Step 6.23

Multiply the new quotient term by the divisor.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$\frac{177}{343}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

$9$

$\frac{177 x^{2}}{49}$

$\frac{177 x}{49}$

$\frac{1593}{343}$

Step 6.24

The expression needs to be subtracted from the dividend, so change all the signs in $- \frac{177 x^{2}}{49} - \frac{177 x}{49} - \frac{1593}{343}$

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$\frac{177}{343}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

$9$

$\frac{177 x^{2}}{49}$

$\frac{177 x}{49}$

$\frac{1593}{343}$

Step 6.25

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$\frac{3 x^{4}}{7}$

$\frac{3 x^{3}}{7}$

$\frac{6 x^{2}}{49}$

$\frac{33 x}{49}$

$\frac{177}{343}$

$7 x^{2}$

$7 x$

$9$

$3 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$7 x$

$9$

$3 x^{6}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$3 x^{5}$

$\frac{27 x^{4}}{7}$

$0 x^{3}$

$3 x^{5}$

$3 x^{4}$

$\frac{27 x^{3}}{7}$

$\frac{6 x^{4}}{7}$

$\frac{27 x^{3}}{7}$

$0 x^{2}$

$\frac{6 x^{4}}{7}$

$\frac{6 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$\frac{33 x^{3}}{7}$

$\frac{54 x^{2}}{49}$

$7 x$

$\frac{33 x^{3}}{7}$

$\frac{33 x^{2}}{7}$

$\frac{297 x}{49}$

$\frac{177 x^{2}}{49}$

$\frac{640 x}{49}$

$9$

$\frac{177 x^{2}}{49}$

$\frac{177 x}{49}$

$\frac{1593}{343}$

$\frac{463 x}{49}$

$\frac{4680}{343}$

Step 6.26

The final answer is the quotient plus the remainder over the divisor.

$\frac{3 x^{4}}{7} - \frac{3 x^{3}}{7} - \frac{6 x^{2}}{49} + \frac{33 x}{49} - \frac{177}{343} + \frac{- \frac{463 x}{49} + \frac{4680}{343}}{7 x^{2} + 7 x + 9}$

Step 6.27

The oblique asymptote is the polynomial portion of the long division result.

$y = \frac{3 x^{4}}{7} - \frac{3 x^{3}}{7} - \frac{6 x^{2}}{49} + \frac{33 x}{49} - \frac{177}{343}$

Step 7

This is the set of all asymptotes.

No Vertical Asymptotes

No Horizontal Asymptotes

Oblique Asymptotes: $y = \frac{3 x^{4}}{7} - \frac{3 x^{3}}{7} - \frac{6 x^{2}}{49} + \frac{33 x}{49} - \frac{177}{343}$

Step 8