Question

If x = 3 is one zero of the quadratic polynomial x^2 - 2 x k x - 6 , then find the value of k

Answer 1

Answer:

X^2 –2X^2K –6 =0

(3)² –2(3)²K –6=0

9–18K –6=0

–18K =–3

18K=3

K=⅙

Answer 2

Answer:

your question is....

${x}^{2} - 2kx - 6 = 0 \\ or. \: \: {3}^{2} - 2k \times 3 - 6 = 0 \\ or. \: \: 9 - 6k - 6 = 0 \\ or. \: \: - 6k + 3 = 0 \\ or. \: \: - 6k = - 3 \\ or. \: \: 6k = 3 \\ or. \: \: k = \frac{1}{2}$