Question

Pls answer this question

Answer 1

alpha +beta=-b/a

alpha+beta=-(-k-6)

alpha+beta=k+6

alpha*beta=c/a

alpha*beta==4k-2

now put these values in the equation

alpha+beta=alpha*beta/2

k+6=4k-2/2

k+6=2(2k-1)/2

k+6=2k-1

k-2k=-1-6

-k=-7

k=7