Question

If x=3 is a root of the equation, x²-2kx-6=0. Find k

Answer 1

Answer:

Since x=3

Putting in the value of x

(3)²-2×3×k-6=0

9-6k-6=0

3=6k

k=$\frac{1}{2}$

Step-by-step explanation:

Answer 2

Answer: Substitute x=3

Step-by-step explanation:

3square - 2k×3 - 6 =0

9 - 6k - 6 =0

9 - 6 = 6k

3 = 6k

3/6 = k

k = 1/2.

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