(√2 - 3√5)² + (√2 + 3√5)² = √2^2-2*√2*3√5+(3√5)^2+ √2^2+2*√2*3√5+(3<span>√5)^2=
</span><span>√2^2=4
</span>(3<span>√5)^2=45, получаем</span><span>
2+45+2+45=94</span>
29:8=3 (5 ост)
55:7=7 (6 ост)
71:8=8 (7 ост)
47:8=5 (7 ост)
43:9=4 (7 ост)
35:9=3 (8 ост)
67:7=9 (4 ост)
49:6=8 (1 ост)
75:9=8 (3 ост)
52:9=5 (7 ост)
17/30-2/15=17/30-4/30=13/30
-9,5+(-100)=-9,5-100=-109,5
-5,07+(-61,9)=-5,07-61,9=-66,97
-21,61+(-45,7)=-21,61-45,7=-67,31