Question

if y^2+1/y^2=11 find the value of y-1/y
pls ans fast​

Answer 1

Answer:

y^2+1/y^2=11

(y-1/y)^2=y^2+1/y^2-2*y*1/y

(y-1/y) ^2=11-2

(y-1/y) ^2=9

y-1/y=√9

y-1/y=3