Question

If x-1/x = 3 find $x^{4}$+1/$x^{4}$

Answer 1

Step-by-step explanation:

x-1/x= 3.

on squarei g both side

(x-1/x)²=3²

x²+1/x²-2•x•1/x=9

x²+1/x²-2=9

x²+1/x²=11

on squareing both side

(x²+1/x²)²=11²

x⁴+1/x⁴+2•x²•1/x²= 121

x⁴+1/x⁴+2=121

x⁴+1/x⁴= 119

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