Question

If alpha , beta are zeroes of x^2-4x+1, then find the value of 1/alpha + 1/beta-alpha beta

Answer 1

Sum of roots = 4

Product of roots = 1

If you simplify 1/ alpha+ 1/ beta, you will get alpha+ beta/(alpha*beta)

= sum of roots/ product of roots

=4/1

=4

Hope this helps!