Question

Find the value of k, if sum of the roots of the equation x2

- 6x – k-1=0 is three times the

products if its roots.​

Answer 1

Answer:

k=1

Step-by-step explanation:

sun =6

product =k+1

6=3(k+1)

k=1

Answer 2

Answer:

-1

Step-by-step explanation:

$x ^{2} - 6x -( k - 1) = 0 \\ \alpha + \beta = 3 \alpha \beta \\ - b \div a =3 \times( c \div a) \\ - ( - 6) = 3 \times - (k - 1) \\ \\ k - 1 = - 2 \\ \\ k = - 1$

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