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The passato prossimo is used for completed actions. Oggi ho mangiato una mela-Today I ate an apple. Whereas the imperfetto is used for repeated or descriptive actions. Quando ero piccolo andavo a scuo...

The y=mx+c equation is for a straight line (also known as 'linear') graph.

The 'y' is representative of the y-value, 'm' represents the gradient (how s...

The first step is to make sure that the coefficient of x^2 is 1 by dividing all terms by a (where a equals the coefficient of x^2). Then we must write the quadratic e...

This is because the reaction taking place is a displacement reaction, meaning that one element is being displaced by another. 

So what is being displaced?:

If you look...