Question

Que no 3 answer it with explanation step by step

Answer 1

Answer:

Step-by-step explanation:

k=3

if equation is ax^2+bx+c

Then root is

alpha=[-b+✓(b^2-4ac)]/2×a

So 2×a=6

in your case a=k

So, k=6/2=3

Answer 2

Answer:

Value of a is 6

Step-by-step explanation:

$\alpha + \beta = \frac{ - b}{ a }$

$\frac{ - b}{a} = \frac{ -b + \sqrt{ {b}^{2} - 12c } }{6} + \frac{ - b - \sqrt{ {b}^{2} - 12c} }{6 }$

a=6