Answer:

Explanation:
To simplify this expression, we can divide 20a^8b^2 by 4a^2b.
First, we can simplify the numbers by dividing 20 by 4 to get 5.
Then, we can simplify the variables by subtracting the exponents of the same bases (a and b).
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This gives us the simplified expression 5a^6b. So the answer would be the third one down, or
.