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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.
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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.
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Jun 27, 2023
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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.
Mathematics
high-school
Rijam
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It will have a common ratio if it’s a gp
So 1/(sqrt x+1= (sqrt x -1)
(Sqrt x +1)(sqrt -1) = 1
X-1. = 1
X = 2
Smoore
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Jul 3, 2023
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