Question

Factorizar acm+adm+bcm+bdm+acn+adn+bcn+bdn

Answer 1

m(ac + ad + bc + bd) + n(ac + ad + bc + bd) = (ac + ad + bc + bd)(m + n)
(a(c + d) + b(c + d))(m + n) = ((c + d)(a + b))(m + n)