Search over 10,000 free study notes

Factorise means to put into brackets and solve means to find values of x that make the equation true.We need to find two numbers that multiply to make 15 and add together to make -8. They both need to be ...

3x^2+3x-2x-2
3x(x+1)-2(x+1)
(3x-2)(x+1)

It is better to think of it as substituting one equation into another, rather than thinking of it as ‘making it equal to zero’. Say you have a quadratic equation y = x^2 - x - 6 and you want to find it’s ...

HACER Unlike regular verbs in the present tense, 'hacer' has an irregular stem in the first person singular (yo) form.
The conjugation in the present tense is as follows: YO - hago, TÚ - haces, ÉL/E...

If you look at a set of x,y-axes, and imagine any curve going through both axes (you don't have to be able to imagine what this graph of f looks like just yet). Now imagine the part of the graph that cros...