Question

if x -1/x = 3, find x^2 +1/x^2​

Answer 1

Answer:

squaring both sides

so x^2+1/x^2=9-2=7 ans

Answer 2

eleven

Step-by-step explanation:

x-1/x=3

squaring on both sides

(x-1/x)^2=9

x^2+1/x^2-2*x1/x=9

x^2+1/x^2-2=9

x^2+1/x^2=11