Question

if x=3 is one root of the quadratic equation x2-2kx-6x then find the value of k​

Answer 1

Answer:

-1/3

Step-by-step explanation:

x is root

hence

at x=3

ײ-2kx-6x=0

3²-2k(3)-6(3)=0

9-6k-18=0

k=-1/3