Answer:
4(2x - 5)
Step-by-step explanation:
To factorize the expression, we need to identify the factors of each term. So:
Factors of 8x are: 2, 4, and x
Because:

In the same way, the factors of 20 are 4 and 5.
So, we can rewrite the expression and factorize the number 4 as:

Therefore, the factored form of the expression is:
4(2x - 5)