Question

if y+/y=4 then y^2+1/y^2 is?

Answer 1

y +1/y = 4
on squaring both sides
y² +1/y² +2 y*1/y = 16
y²+1/y² = 16-2
y²+1/y² = 14
thus 14 is ur answer

Answer 2

Hope this helps.....