Do not use a calculator in this question. Find the positive value of x for which (4 + V5)x² + (2 – V5)x – 1 = 0, giving your answer in the form a+v5 where a and b are integers.

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PAPER 1
4. INDICES AND SURDS
page 31
J2016
3
Do not use a calculator in this question.
Find the positive value of x for which (4+V5)x² +(2 – V5)x – 1 = 0, giving your answer in the
a+v5
form
where a and b are integers.
Transcribed Image Text:PAPER 1 4. INDICES AND SURDS page 31 J2016 3 Do not use a calculator in this question. Find the positive value of x for which (4+V5)x² +(2 – V5)x – 1 = 0, giving your answer in the a+v5 form where a and b are integers.
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