If X4 − 79X2 + 1 = 0, then a value of X + X - Exam Yatra

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72

M: +2.00/-0.50

If X⁴− 79X²+ 1 = 0, then a value of X + X⁻¹ can be:

[SSC CGL 21st April 2022 Shift-2 With Answers]

A

7

B

5

C

9

D

8

EXPLANATION

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