What is the discriminant of the equation 9x2-12x plus 4 equals 0?

9x2 - 12x + 4 = 0 is of the form ax2 + bx + c = 0 where the discriminant, D, can be found by

D = b2 - 4ac

First, you find the values of a, b and c:

a = 9

b = -12

c = 4

Now you can find D:

D = (-12)2 - (4)(9) = 144 - 36 = 108

D = 108