Question

If x=-1/2 is a solution of the quadratic equation 3xsquare+2kx-3=0 find the value of k

Answer 1

put x=-1/2 in above equation,
we get,
$3 \times \frac{1}{4} - 2 \times k \times \frac{1}{2} - 3 = 0$
$\frac{3}{4} - k - 3 = 0$
k=
$- \frac{9}{4}$