Simplify to... 3x^2 - kx + 33 = 0

Then in Desmos, graph

3x^2 - kx + 33 = 0

and

k = 0

Click on k = 0 and set the **Step** to 1

Change the range from "-10 to 10" to "0 to 25"

let the slider play from 25 to 0 and find the first one that has no line shown on it