Factorise the following quadratic x^2 - 8 + 16

Find two numbers that multiply together to equal the 3rd term and the product of the same two numbers also needs to equal the 2nd term. This is trial and error but in this case it will be,    (x - 4) (x - 4)

Related Further Mathematics GCSE answers

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f(x) = 3x^3 – x^2 – 20x – 12 (a) Use the factor theorem to show that (3x + 2) is a factor of f(x). [2 marks] (b) Factorise f(x) fully. [3 marks]


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Given a^2 < 4 and a+2b = 8. Work out the range of possible values of b. Give your answer as an inequality.


Solve the simultaneous equations xy=2 and y=3x+5.


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