Question

Alfa and1/alfa are zeroes of polynimiql 4xsquare -2x+k+7.find k

Answer 1

$product \: \: of \: \: the \: \: roots \\ \frac{k + 7}{4} = \alpha \times \frac{1}{ \alpha } = 1 \\ k + 7 = 4 \\ k = - 3$