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Both ser and estar translate in English as 'to be'. Ser and estar, however, are very different in both meaning and usage. 

First of all it is important t...

Step 1: The first step is to rewrite the equation in the form ax² + bx + c = 0. So in this case, we achieve this by...

A salt and water (H₂O). H⁺ from the acid and OH^- from the base combine to make water. The salt formed depends on the acid and base counterions, and is usually dissolved in...

It's actually really easy to do your essay structuring right. I always followed this formula and still do! I use PEE. This is simply Point, Evidence, Example. So, if the question is, 'how did Hitler ga...

The first part is relatively simple.  If we write tan(3x) as tan(2x+x) we can use addition formulae to give:

tan(2x+x)= (tan(2x)+tan(x))/(1-tan(2x)tan(x))

tan(2x) = 2tan(x)/...