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This question is asking us to complete the square. To find the value of a we must halve the coefficient of x. So, in this question: a = 4/2 = 2. To find the value of b we...

To factorise this equation we want to get 2 brackets. We are looking for 2 numbers which multiply to make -12 and add to make -1. So, let's see some factors of -12: -12 = (-1) x 12; (-2) x 6; (-3) x 4; (-...

Nazi policy directly affected the lives of women in Germany in the years 1933-1945. One of the Nazi's social objectives was to create a homogenous family structure and a larger Aryan race. As a result, wo...

George Orwell's vision of a dystopian world is most disturbing not because of its absurdity but because of the parallels it draws with our own society. By creating a world which features many 'uncanny' fe...

Arteries - carry blood at high pressure away from the heart. Their narrow lumen and thick, muscular wall allows them to do this effectively. The elastic, muscular wall allows for expansion and relaxation ...