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This is a very common question for GCSE maths students and the idea of a quadratic comes up very often in other forms too.To factorise this equation we need to find two numbers whose sum is -5 and whose p...
Using the "FOIL" Technique should help with the expansion, telling you what order to multiply things together. F stands for "firsts", so the first step is to multiply the first things ...
Question: There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.Answer: total mar...
x= 9/2y= -3/2
claw technique: multiply each 'thing' in the first bracket with each 'thing' in the second bracket.2m2 + 2m - 3m -3then collect the like terms2m2 -1 -3
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