Question

$72 ^{2} -2*72*53+53 ^{2}$
$112 ^{2} -2*112*56+56 ^{2}$
$82 ^{2} +2*82*73+73 ^{2}$

Answer 1

1)72²-2*72*53+53²=(72-53)²=19²=361
2)112²-2*112*56+56²=(112-56)²=56²=3136
3)82²+2*82*73²=(82+73)²=155²=24025

Answer 2

как ты преоброзила напиши