Answer:
If you meant to simplify the expression,
-8b+4ab
if factor: 4b(a-2)
Step-by-step explanation:
To simplify an expression, combine the like terms.
8b+4ab-16b, 8b and -16b are like terms.
-8b+4ab, notice 4ab has an extra a before the b, so it is not a like term of -8b
To factor it out:
The expression -8b+4ab both includes b in it.
Thus,
b(-8+4a) -8 and 4 can be has GCF of 4
=4b(a-2).