Question

Alpha and beta are the roots of the quadratic polynomial x2-(k-6)x+2k+1) find the value of k if alpha +beta =alpha beta

Answer 1

hi my name is PAVANKALYAN
Solution:
p(x)=x2-(k-6)x+(2k+1)alpha+beta=-b/a=k-6

alpha*beta=c/a=2k+1

according to quetion

alpha+beta=alpha*beta

k-6=2k+1

k=-6-1

k=-7

Answer 2

Answer:

This is the answer. Hope it helps