Question

Find the value of k such that polynomial x2-(k+6)x+2(2k-1)

Answer 1

Answer:

$\alpha + \beta = - \frac{b}{a} \\ \: \: \: \: \: \: \: \: \: \: \: \: =(k + 6) \\ \\ \alpha \times \beta = \frac{c}{a} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = 2(2k - 1) \\ \\ \: \: \: \: \: \: \: \: k = \frac{1}{2}$