Question

( left.x^{2}+1 / x^{2}right)^{2}=x^{2}+frac{1}{x^{4}}+2 quadleft(x-frac{1}{x}right)^{2}=x^{2}+frac{1}{x^{2}}-2 )
( =119+2 quad 291-2 )
( x^{2}+4 x^{2} quad 2 sqrt{121} quad x-1 / x=3 )
( x^{2}+1 / x^{2} )
( (x+y+x)^{2}+2 x^{2}+2 x^{2}+2 )
( (x+1 / x)=8=x^{3}-1 / x^{3} )

# of at they = 19 find the value of as I

Solution