Răspuns :
fie x numarul cerut
x=584x180=96120
(286+503)x2 + (20235-1879)=
=789x2+18356
=1578+13356
=14934
x=584x180=96120
(286+503)x2 + (20235-1879)=
=789x2+18356
=1578+13356
=14934
a)180x534 = 96120
b) [2x(286+503)]+(20235-1879) = (2x789)+18356 = 1578 + 18356 = 19934