Question

If (x+1/x)= 3. Find the value of x square+ 1/x square and x power 4 + 1/x power 4

Answer 1

Answer:

$x^{2} +1/x^{2} =(x+1/x)^{2} -2\\ =3^{2}-2=7\\ x^{4}+1/x^{4}=(x^{2} +1/x^{2} )^{2}-2\\ =7^{2} -2=47$

Step-by-step explanation: