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Q27: Answers – Paper 1 – June 2018
Q27: Answers – Paper 1 – June 2018
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Working
There is no working for part a!
There is no working for part a!
b)Without expanding any brackets,
show how to work out the exact solutions of 9(x + 3)2 = 4
Give the solutions.
Question
27 a) Jo wants to work out the solutions of x2 + 3x – 5 = 0
She says,
‘‘The solutions cannot be worked out because
x2 + 3x – 5 does not factorise to (x + a)(x + b) where a and b are integers.’’
Is Jo correct?
Tick a box.
Give a reason for your answer.
[1 mark]
27 b)Without expanding any brackets,
show how to work out the exact solutions of 9(x + 3)2 = 4
Give the solutions.
[3 marks]