For this case we must indicate the factors of the following expression:
![x ^ 2-12x-20](https://img.qammunity.org/2020/formulas/mathematics/high-school/qnk5s4kxn442r45l03j5c49cquu39p21t7.png)
To factor we must find two numbers that when multiplied result in -20 and when added, result in -12.
There are no two numbers that meet this condition. Thus, the expression is not factorizable with rational numbers.
Answer:
The expression is not factorizable with rational numbers.