Question

plz answer with full process!!
thnx in advance​

Answer 1

Answer:

Step-by-step explanation:

{x - 1/x}² = 4²

x² + 1/x² - 2 = 16

x² + 1/x² = 18

{x² + 1/x²}² = 324

x4 + 1/x4 + 2 = 324

x4 + 1/x4 = 322

Answer 2

Very easy question...

Answers above...

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