Question

If one root of the quadratic equation 2x + kx - 6 = 0 is 2, the value of k is​

Answer 1

$\huge{\mathcal{\blue{\underline{Answer}}}}$

$2x {}^{2} + kx - 6 = 0 \\ 2( {2)}^{2} + k(2) - 6 = 0 \\ 8 + 2k - 6 = 0 \\ 2k + 2 = 0 \\ 2k = - 2$

$\huge{\mathcal{\blue{\underline{k=-1}}}}$

Answer 2

Answer:2x+kx-6=0

Scince 2 is a root so 2 will satisfy the equation

4+2k-6=0

Or,2k=2

Or,k=1

Step-by-step explanation: