Question

Ifif a and b be the roots of the equation x^2-px+q=0the the value of (1÷a)+(1÷b)

Answer 1

$from \: the \: equation \\ a + b = p \: \: \: and \: \: \: ab = q \\ \frac{1}{a} + \frac{1}{b} = \frac{a + b}{ab} = \frac{p}{q}$