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Expand and simplify (5x – 2y)(3x – 4y) In this question, we are asked to 'expand' out the brackets. What this means is we need each term in one set of brackets (5x and -2y) to be multiplied by each term in t...

Let's use an example. x+y=6 2x+3y=14 Find the values of x and y. When I was kid back then, I was always wondering why are equations important? Well, for me, its because we want to be precise with our asnwers...

The Pythagoras Theorem equation is: a 2 + b 2 = c 2 It is used to calculate an unknown side of a right angled triangle. a, b and c represent sides of the triangle and you can rearange the formula to find whi...

To simplify an equation the x terms can be collected together to give: 4x + 5x - 2x = 7x The numbers can be collected together to give: -2 + 7 = 5 Which then when put together makes 7x + 5

Students took to Twitter to moan about how difficult the question was. I agree, there is something inherently comic about the question, since you start off talking about Hannah and sweets and then - BANG - a...