Разложи на множители 63am+22mu−18au−77m2
63am+22mu-18au-77m²=(63am-77m²)+(22mu-18au)=7m(9a-11m)+2u(11m-9a)=7m(9a-11m)-2u(9a-11m)=(9a-11m)(7m-2u)