Question

If x^4+1/x^4=119, then find x+1/x

Answer 1

Step-by-step explanation:

$\frac{ {x}^{4} + 1 }{ {x}^{4} } = 119 \\ \implies {x}^{4} + 1 = 119 {x}^{4} \\ \implies 119 {x}^{4} - {x}^{4} = 1 \\ \implies118 {x}^{4} = 1 \\ \implies {x}^{4} = \frac{1}{118}$