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Because if we simply expand (x+y) 2 we'd get x 2 +y 2 +2xy which shows that there's an extra term which is 2xy. another practical way to check your work and see why LHS ≠ RHS is by substituting random number...

You should include about why you want to do the course you are interested in, for me it was medicine. For a medicine personal statement for example, the university is looking for people who are deeply passio...

Use the first 5 minutes wisely. You're not allowed to write anything down yet, so read through the questions.Read the questions carefully - you have five full minutes. Make sure you read them all through car...

Consider first of all that Hitler rose to power not because of shared ideology, but because of fear. Hitler's voters were scared of what Germany was facing. The Weimar Republic was doomed to begin with becau...

If I have a reocurring decimal I use a special trick to work it out as a fraction. The trick is to try and cancel out the reocurring bit by multiplying by 10 several times and then using subtraction. E.g. 7....