Question

if alpha and beta are the zeroes of the quadratic polynomial f(x)=ax2 +bx +c ,then evaluate alpha - beta

Answer 1

You know alpha +beta and alpha*beta so just use the equation (alpha-beta) ^2=(alpha+beta)^2 - 4alpha*beta

Answer 2

I'll take just a minute to answer this one and attach pics
I'm not sure about the answer please verify