Question

X + 1 by X equal to 3 then x power 4 + 1 by x power 4 equals to dash

Answer 1

I think you might satisfy from my answer . thanks

Answer 2

↑ Here is your answer ↓
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$x + 1/x = 3$

$x^2 + x = 3x$

$x^2 - 2x = 0$

$x(x-2) = 0$

$x = 2$

Lets find now!

$x^4 + 1/x^4$

$2^4 + 1/2^4$

$16 + 1/16$

$= 16.0625$