Question

4p power to 2 - 9q power to 2

Answer 1

$4 {p}^{2} - 9 {q}^{2} \\ = {(2p)}^{2} - {(3q)}^{2} \\ = (2p - 3q)(2p + 3q)$

Answer 2

4q^2-9q^2
(2q)^2-(3q)^2
(2q+3q)(2q-3q)
5q×(-1q)
-5q