Question

If , is a solution of the quadratic equation 3x² + 2kx – 3 = 0, find the value of k.

Answer 1

ok

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Answer 2

 k = -9/4

Step-by-step explanation:

Given x = -1/2 is a solution of the quadratic equation 3x² + 2kx – 3 = 0

So let's substitute x in the equation.

3 (-1/2)² + 2k (-1/2) - 3 = 0

3/4 -k - 3 = 0

k = 3/4 - 3

  = (3 - 12)/4

 k = -9/4