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Ok so to factorise a quadratic with a co-efficient in front of the x^2 you need to follow a couple of steps: Step 1 - multiple the co-efficient by the number at the end of the expression - e.g. 3^8 = 24 S...

Pythagoras' Theory explains that the length of sides in a right angled triangle are related. This means we can use the length of two sides to find that of the third!

The relationship he found is a<...

1. Start by writing the equation out again: x² + 5x + 6 = 0

2. I do it by thinking which two numbers add together to = 5 and which same two numbers multiply to = 6. The an...