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a2 + 2ab + b2
This question requires us to know how to multiply out the brackets and collect like terms together. It is worth 3 marks in total. First, we draw a smiley face on the brackets in the question: link the x a...
The substitution method means we have to rearrange the linear equation to find a variable, either x or y, then substitute it into the quadratic (and more difficult to solve) equation, as follows...x2...
This question is 3 marks, looking for 2 marks of working and 1 for correct answer. This type of question is called expanding brackets. A simple way to do this is using the acronym FOIL (First, Outside, In...
(14y^2)/y = 14y5y x 2 = 10y14y + 10y = 24yThe division and multiplication must be performed before the addition. This can be remembered with the acronym BIDMAS.
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