Ответ:

Объяснение:

2² + 2 - 5 = 4 + 2 - 5 = 6 - 5 = 1

( ( 42 * 23 ) - 205 ) : 761 = ( 966 - 205 ) : 761 = 761 : 761 = 1

√ ( 81 + 36 ) * √4 - 22 + 2 - 9 = ( 9 + 6 ) * 2 - 22 + 2 - 39 = 15 * 2 - 22 + 2 - 39 = 30 - 22 + 2 - 9 = 8 + 2 - 9 = 10 - 9 = 1