Question

if x=3 is one root of the quadratic equation x square minus 2kx minus 6 equal to 0 ,then find the value of k​

Answer 1

Answer:

k= one upon 2

Step-by-step explanation:

x² - 2 k x - 6 = 0

put x=3 in the equation

3² - 2 k × 3 - 6 = 0

9 - 6 k - 6 = 0

3 - 6 k = 0

- 6 k = - 3

k = - 3 / - 6

k = 1 / 2

Answer 2

Answer:

k = 1/2

Step-by-step explanation:

Since the solution is 3

Just put the value of x in the equation and you will get the answer.