Search over 10,000 free study notes

First, expand out the brackets. Initially, this will give you 20 - 4√3 + 5√12 - √36.

√36 is the equivalent of 6, now giving up 20 - 4√3 + 5√12 - 6. We can combine the 20 and the 6 to give us 14 - 4...

You need to find two numbers that multiply to make 6 and add to make 5. Usually it's easier to find a correct multiplication and check that it satisfies the addition.
Here the options are 6&1 or...

24

A synapse is a small gap between neurones (nerve cells). Information is passed along the neurone as an electrical impulse, but to get from one neurone to the next, the information is converted into a chem...

The Earth's surface is divide into plates, and these plates on the Crust move around slowly (mm's to cm's a year), this is due to convection currents in the mantle on which the crust sits. These convectio...