Question

помогите!!!!!!!!!!!!!!!

Answer 1

a^2/b^2
2(x-y)
(m+n)/(m-n)
2ab

Answer 2

$1) {a}^{2} \div {b}^{2}$
$2)2(x - y)$
$3)(m + n) \div (m - n)$

$4)2ab$