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During lesson we were given a starter activity which was to try and factorise polynomials and see what happened.

The polynomials were $x^3-8$, $x^3-3x^2+ x -3$ and $x^4 - 16$.

I could not work out what happened to them, and it's bugging me. If anyone can explain then it'd be helpful! Thank you.

  • 1
    Have you tried applying the [rational root test](http://en.wikipedia.org/wiki/Rational_root_test)?2010-11-13
  • 1
    Is this the right polynomial?2010-11-13

3 Answers 3