Question

hi pls sove this q ​

Answer 1

Answer:

alpha + beeta = - b/a = - 5/2

alpha . beeta = c/a = k/2

alpha^2+beeta^2+alpha.beeta=21/4

(alpha + beeta)^2 - 2alpha.beeta + alpha.beeta =21/4

(-5/2)^2 - alpha.beeta =21/4

25/4 - k/2 =21/4

-k/2 = 21/4 -25/4

-k/2 = -4/4

-k/2= -1

-k = -2

k=2

hope it helps you