If x + 1/x =3 then find the value of 4x^2 + 1 / (4x^2)=?
Answers
Answered by
5
x+1/x=3
x+1=3x by cross multiply
-2x=1
x=-1/2
put the value of x in 4x2 + 1/4x2=?
4(1/2)^2 +1 / 4(1/2)^2=1
x+1=3x by cross multiply
-2x=1
x=-1/2
put the value of x in 4x2 + 1/4x2=?
4(1/2)^2 +1 / 4(1/2)^2=1
sfsafavi:
I apologize, I think x+ (1/x) =3 => x^2 -3x +1=0
Similar questions