Question

please answer my question​

Answer 1

Step-by-step explanation:

6. the general quadratic equation is

${x}^{2} - x( \alpha + \beta ) + \alpha \beta = 0$

where alpha,beta are roots of the equation

7. as alpha is a root

then

$f( \alpha ) = 0$

8. sum of the roots = -( coeffecient of x)/coefficient of x^2

k/3=3

so k=9

9. same as 6 th question

the equation is

${x}^{2} + x - 12 = 0$

hope this will help u