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19-09-2022
Mathematics

contestada

S is a geometric sequence.
a) (√x + 1), 1 and (√x-1) are the first three terms of S.
Find the value of x.
You must show all your working.
b) The 5th term of S can be written in the form a√√2+b
where a and b are integers.
Find the value of a and the value of b.
a =
b =

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