Divide Using Long Polynomial Division (2x^4+4x^3-5x^2+3x-2)/(x^2+2x-3)

$\frac{2 x^{4} + 4 x^{3} - 5 x^{2} + 3 x - 2}{x^{2} + 2 x - 3}$

Step 1

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

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

Step 2

Divide the highest order term in the dividend $2 x^{4}$ by the highest order term in divisor $x^{2}$ .

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

Step 3

Multiply the new quotient term by the divisor.

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

Step 4

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

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

Step 5

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

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

Step 6

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

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

$3 x$

$2$

Step 7

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

$2 x^{2}$

$0 x$

$1$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

$3 x$

$2$

Step 8

Multiply the new quotient term by the divisor.

$2 x^{2}$

$0 x$

$1$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

$3 x$

$2$

$x^{2}$

$2 x$

$3$

Step 9

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

$2 x^{2}$

$0 x$

$1$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

$3 x$

$2$

$x^{2}$

$2 x$

$3$

Step 10

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

$2 x^{2}$

$0 x$

$1$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$4 x^{3}$

$5 x^{2}$

$3 x$

$2$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$x^{2}$

$3 x$

$2$

$x^{2}$

$2 x$

$3$

$x$

$1$

Step 11

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

$2 x^{2} + 1 + \frac{x + 1}{x^{2} + 2 x - 3}$

Divide Using Long Polynomial Division (2x^4+4x^3-5x^2+3x-2)/(x^2+2x-3)

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