Question

hiii guys
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plz solve this.. ​

Answer 1

Answer:

Given that

alpha+beta=1/2(alpha)(beta)

k+6=2k-1

k=7

Answer 2

Answer:

Step-by-step explanation:

if α+β=-b/a=k+6

αβ=c/a=2(2k-1)

then,

α+β=1/2c/a

-b/a=1/2c/a

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

k+6=2k-1

k-2k=-1-6

-k=-7

k=7