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Convergence of sequence: $x_1 = 2$ and $x_{n+1} = \sqrt{x_n+20}$
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Let $x_1 = 2$ and $x_{n+1} = \sqrt{x_n+20}, n = 1, 2, 3, ... $. Show that the sequence $x_1, x_2, x_3, ... $ is convergent.
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convergence
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