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In Germany we have many celebrations. Easter and christmas are the biggest ones. Of course there is more celebrations, but usually on the others there is no presents.

We factorise the equation by completing the square.Take y=x² + ax + bWhen we complete the square we have y= (x+1/2a)²-a²+b which is y= (x+1/2a)² + c where c = -...

1. Re-read your texts to familiarise yourself with them. 2) Work out the key themes and motifs of each text.3) Create a mind map for each key theme/motif. It should have branches leading off with key a...

The two common ways to approach them is either by substitution or addition/subtraction. Firstly, for substitution, rearrange one of your equation so that one of the unknowns becomes the subject and then ...

Rearrange to make the y component the subject3y = 19 - 2x , y = 11 - 3xMultiply the second equation by 33y = 33 - 9xEquate to each other19 - 2x = 33 - 9xRearrange7x = 14Divide by 7x = 2Substitute x=2 into...