Решение:
(√42-5)²=42-10√42+25=17-10√42.
Ответ: (√42-5)²=17-10√42 т.е. " <span>1) 17-10√42</span> ".
1. 26=(72:n)=35
2/ 35-26=9
3/n=72: 9=8
Проверка 26+(72:8)=7*5 72:8=9 26+9=35 35=35
<span>72+48/(3*2)=80
</span><span>(1530-400)+(570-70)=1770</span>
5/8 = 45/72 > 40/72 > 32/72 > 16/72