First, let's find the dot product of the two vectors:

(12, 3) • (-2, 5) = 12(-2) + 35 = -24 + 15 = -9

Next, let's find the cross product of the two vectors:

(12, 3) x (-2, 5) = (12)(5) - (3)(-2) = 60 + 6 = 66

So, when we multiply the dot product by the cross product, we get:

-9 * 66 = -594

Therefore, the result of (12, 3) • (-2, 5) x (-2, 5) is -594.