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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.

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.

S is a geometric sequence. a) (√x + 1), 1 and (√x-1) are the first three terms of-example-1
User Rijam
by
8.6k points

1 Answer

4 votes
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
User Smoore
by
7.4k points
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