Search over 10,000 free study notes

(x+3)(x-8)

x*x= x^2

x*-8= -8x

3*x= 3x

3*-8= -24

=x^2 - 8x + 3x - 24

=x^2 - 5x - 24

This question is a classic example of a problem which might catch some students out, if due care is not implemented.

Eleri is investing £3700 at 2% per annum compound inter...

I would always approach this type of question methodically in the same way each time to minimise panic in exams. 1. Collect the like terms together (10x = 10) 2.Divide to find the solution (x=10)

I tend to use rhymes to remember difficult maths formulas - it makes life so much easier! For example, "I never knew how much I cared that the area of a circle is πr²".