Dividing and factorising polynomial expressionsDivision of polynomials

A polynomial is an algebraic expression involving many terms and can be factorised using long division or synthetic division.

Part ofMathsAlgebraic and trigonometric skills

Division of polynomials

Let's look at two different types of division:

  • long division of polynomials
  • synthetic division

We'll consider each in turn.

Long division of polynomials

Watch this video to learn about long division of polynomials.

You can use long division to divide algebraic expressions. For example:

\(({x^2} + 7x + 3) \div (x - 1)\)

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The answer is:

\(({x^2} + 7x + 3) = (x - 1)(x + 8) + 11\)

There are a few more terms that it is good to know when you are dividing polynomials:

Polynomial long division labelled with divisor, quotient, remainder and the dividend
  • dividend - The polynomial you are factorising/dividing. In this case \({x^2} + 7x + 3\)
  • divisor - The number or expression you are dividing by. In this case \(x - 1\)
  • quotient - The result found by dividing the dividend by the divisor (not including the remainder). In this case \(x + 8\)
  • remainder - The number left over that cannot be divided any more. In this case \(11\)