If x4 – 79x2 + 1 = 0, then a value of x3 + x–3 can be: – McqOptions

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1.	If x4 – 79x2 + 1 = 0, then a value of x3 + x–3 can be:
A.	798
B.	720
C.	789
D.	702
Answer» E.

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