Question

if alpha and beta are the zeros of polynomial x^2 - 3x + 2k and alpha + beta = Alpha× beta then k=?


options are
a=1
b=3
c=-3
d=3/2​

Answer 1

Step-by-step explanation:

If alpha+beta=alpha*beta

Then -b/a =c/a

Which would mean that -b = c --------> 1

A =1

B = -3

C = 2k

From 1

-b=c

= -(-3) = 2k

2k=3

K=3/2