Final answer:
The correct factor is (2? - 2).
Step-by-step explanation:
To find the correct factor, we need to factorize the given expression.
We can simplify the expression by combining like terms:
12?² + 20x - 6x - 10
= 12?² + (20x - 6x) - 10
= 12?² + 14x - 10
Now, let's factorize the expression:
= (6? + 5)(2? - 2)
Therefore, the correct factor is (2? - 2).