Final answer:
To factor the polynomial 6ab-3a-8b+4, you can group the terms based on common factors and then factor out the common factors.
Step-by-step explanation:
To factor the polynomial 6ab-3a-8b+4, you can group the terms with similar variables. So, group the terms with a common factor of 'a' and the terms with a common factor of 'b':
(6ab-3a) + (-8b+4)
Now, factor out the common factor from each pair of terms:
3a(2b-1) - 4(2b-1)
Notice that you now have a common factor of (2b-1). So, you can factor that out:
(3a-4)(2b-1)