Question

x+1/x=?
x^2+1/x^2=27​

Answer 1

Answer:

under root 29

Step-by-step explanation:

$x^{2} +1/x^{2} =27\\add 2 both side\\x^{2} +1/x^{2}+2 =27+2\\we also write in thi form\\x^{2} +1/x^{2} +2x/x=27+2\\(x+1/x)^{2} =29\\x+1/x= \sqrt{29}$