Question

what is the sum of the roots of the quadratic equation x^2+kx+6=0 is -5 then k =?

Answer 1

Answer:

on comparing ax²+bx+c

A=1 ,B=k ,C= 6

b²-4ac =0

k²-4(1) (6) =0

k²-24=0

k²=24

k=+-√24