If x4 + x-4 = 2207, (x > 0) then the value of x + x-1 is: – McqOptions

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1.	If x4 + x-4 = 2207, (x > 0) then the value of x + x-1 is:
A.	19
B.	7
C.	11
D.	9
Answer» C. 11

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