Question 86

If x + (1/x) = 2, then what is the value of $$x^{64}+x^{121}$$ ?

Solution

x + (1/x) = 2

we can substitute x = 1

$$x^{64}+x^{121}$$=$$1^{64}+1^{121}$$=$$1+1$$=$$2$$

so the answer is option C.

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