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· 1 Months ago

(Question:142936.0)

Question:
If x + \(\cfrac{1}{x}\) = 2, find the value of x3 + \(\cfrac{1}{x^3}\):
Options:
A) 2
B) 4
C) 8
D) 16
Solution:

as we know, if x + \(\cfrac{1}{x}\) = 2, ⇒ x = 1

satisfies it.

∴ x3 + \(\cfrac{1}{x^3}\)= 1 + 1 = 2

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· commented

· 1 Months ago

Dear student
Please specify your doubt clearly.

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