Question

If x = -1/2 is a solution of the quadratic equation 3x2+2kx-3=0 find the value of k

Answer 1

just substitute for x :)

3(-1/2)2+2k(-1/2)-3=0
-3 + (-1k) -3 = 0
-6 + (-1k) = 0
+6 +6
-1k = 6
/-1 /-1 k = -6 that's what i believe the answer is