(735+728)²-4*735*728=1463²-2 940*728 =2 140 369-2 140 320=49
(735+728)2-4*735*728=(1463)2-4*1463=2140369-5852=2134517
(735+728)²-4*735*728=1463²-2 940*728 =2 140 369-2 140 320=49
(735+728)2-4*735*728=(1463)2-4*1463=2140369-5852=2134517