Question

If x=3 is one root of the quadratic equation xsquare -2kx-6=0 find the value of k

Answer 1

$- 2kx - 6 = 0 \\ \\ = > - 2k \times 3 = 6 \\ \\ = > - 2k = 2 \\ \\ k \: = - 1$

Answer 2

Answer:1/2

Step-by-step explanation:It is given that 3 is aroot of equation.

x^2-2kx-6=0

(3)^2-2(3)k-6=0

9-6k-6=0

3-6k=0

6k=3

k=3/6

=1/2

Hope it's help u!!!!