What number should be placed in the box to help complete the division calculation?

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

What is coefficient of the term of degree of degree 5 in the polynomial below

Factor the expression using the gcf. the expression 21m−49n factored using the gcf