Algebra Examples

$x^{5} - 1024$ is divided by $x - 4$

Step 1

Write the problem as a mathematical expression.

$\frac{x^{5} - 1024}{x - 4}$

Step 2

To calculate the remainder, first divide the polynomials.

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Step 2.1

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

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

Step 2.2

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

$x^{4}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

Step 2.3

Multiply the new quotient term by the divisor.

$x^{4}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

Step 2.4

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

$x^{4}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

Step 2.5

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

$x^{4}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

Step 2.6

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

$x^{4}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

Step 2.7

Divide the highest order term in the dividend $4 x^{4}$ by the highest order term in divisor $x$ .

$x^{4}$

$4 x^{3}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

Step 2.8

Multiply the new quotient term by the divisor.

$x^{4}$

$4 x^{3}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

Step 2.9

The expression needs to be subtracted from the dividend, so change all the signs in $4 x^{4} - 16 x^{3}$

$x^{4}$

$4 x^{3}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

Step 2.10

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

$x^{4}$

$4 x^{3}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

Step 2.11

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

$x^{4}$

$4 x^{3}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

Step 2.12

Divide the highest order term in the dividend $16 x^{3}$ by the highest order term in divisor $x$ .

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

Step 2.13

Multiply the new quotient term by the divisor.

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

Step 2.14

The expression needs to be subtracted from the dividend, so change all the signs in $16 x^{3} - 64 x^{2}$

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

Step 2.15

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

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

Step 2.16

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

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

Step 2.17

Divide the highest order term in the dividend $64 x^{2}$ by the highest order term in divisor $x$ .

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

Step 2.18

Multiply the new quotient term by the divisor.

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

Step 2.19

The expression needs to be subtracted from the dividend, so change all the signs in $64 x^{2} - 256 x$

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

Step 2.20

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

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

Step 2.21

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

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

$1024$

Step 2.22

Divide the highest order term in the dividend $256 x$ by the highest order term in divisor $x$ .

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$256$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

$1024$

Step 2.23

Multiply the new quotient term by the divisor.

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$256$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

$1024$

$256 x$

$1024$

Step 2.24

The expression needs to be subtracted from the dividend, so change all the signs in $256 x - 1024$

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$256$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

$1024$

$256 x$

$1024$

Step 2.25

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

$x^{4}$

$4 x^{3}$

$16 x^{2}$

$64 x$

$256$

$x$

$4$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1024$

$x^{5}$

$4 x^{4}$

$0 x^{3}$

$4 x^{4}$

$16 x^{3}$

$0 x^{2}$

$16 x^{3}$

$64 x^{2}$

$0 x$

$64 x^{2}$

$256 x$

$1024$

$256 x$

$1024$

$0$

Step 2.26

Since the remander is $0$ , the final answer is the quotient.

$x^{4} + 4 x^{3} + 16 x^{2} + 64 x + 256$

Step 3

Since the final term in the resulting expression is not a fraction, the remainder is $0$ .

$0$