Question

помогите решить номер 783,срочно!!

Answer 1

23^2 = 23*23 = 529
19^2 = 19*19 = 361
81^2 = 81*81= 6561
49^2 = 49*49 = 2401
1.3^2 = 1.3 * 1.3 = 1.69
1.9^2 = 1.9*1.9= 3.61
3 1/2 ^2 = 7/2 * 7*2 = 49/2 = 24.5
4 3/4 ^ 2 = 19/4* 19/4 = 361/16