Question

5.
Sum of the roots of a quadratic equation is
double their product. Find k if equation is
x? - 4kr + k + 3 = 0.
[3 Marks​

Answer 1

Step-by-step explanation:

x2−4kx+k+3=0

α+β=4k

αβ=(k+3)

α+β=2αβ

⇒4k=2(k+3)

⇒4k=2k+6

⇒2k=6

⇒k=3.