Answer:
4n^4 + 20n^3 - 32n^2
Explanation:
We have to distribute 4n2 to each term.
4n2 x n2. We can multiply the two n2 together resulting in 4n^4.
Now we do 4n2 x 5n. Here we multiply 4 x 5 which equals 20. Then, we multiply the n2 and n. Which results in n^3. Now we put them together; 20n^3.
Finally, we multiply 4n2 by -8. Since 8 doesn't have any variables, we just multiply the 4 and -8. Which equals to -32, now we just combine -32 and the variable; -32n2.
Now we combine these terms together. Our final answer is, 4n^4 + 20n^3 -32n^2.
^ represents an exponent.