Question

if x+1/x=3 find 3x^2-4x+3/x^2-x+1​

Answer 1

Step-by-step explanation:

x+1/x=3(given)

=x+1=3x

=3x-x=1

=2x=1

=x=1/2

Now,

3x^2-4x+3/x^2-x+1

=3(1/2)^2-4(1/2)+3/(1/2)^2-1/2+1

=3/4-2+3/1/4-1/2+1

=3/4+1/-5/4

=-1/4/-5/4

=1/5