If you notice that the first term is a perfect square, and the second term is a perfect square, and you have a negative here, we can say that it is "the difference of two squares." What we want to do ...

National 5 Factorising an algebraic expression Difference of two squares Factorising an expression is to write it as a product of its factors. There are 4 methods: common factor, difference of two ...

To check your answer when factorising multiply out the brackets to find if the answer matches with the question. If it doesn't, then you'll know there's something wrong. The first thing to do is find ...