Question

If x=3 is one root of the quadratic of x2-2kr-6=0.then find the value of k

Answer 1

9-6k-6=0
3-6k=0
6k=3
K=1/2

Answer 2

♧♧HERE IS YOUR ANSWER♧♧

Since x = 3 is a root of x² - 2kx - 6 = 0, x = 3 satisfies the equation.

So, the value of k is 1/2.

3² - (2×k×3) - 6 = 0

or, 9 - 6k - 6 = 0

or, 6k = 3

or, k = 1/2

So the value of k = 1/2

♧♧HOPE IT HELPS YOU♧♧