Question

please help me tomorrow is my exam ​

Answer 1

this is the explanation. I hope it helps.

Answer 2

Heya

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( x⁴ + 1/x⁴ ) = ( x² + 1/x² ) × ( x² + 1/x² ) -2

=>

( x + 1/x ) = 4

=>

SQUARING BOTH SIDE'S

x² + 1/x² = 16 - 2

=>

x² + 1/x² = 14

=>

( x⁴ + 1/x⁴ ) = 14 × 14 - 2

=>

( x⁴ + 1/x⁴ ) = 196 - 2

=>

( x⁴ + 1/x⁴ ) = 194