1/3=16/48
3/16=9/48
7/12=28/48
24/96=12/48
1/2=24/48
3/4=36/48
5/6=40/48
1/6=8/48
3/144=1/48
5=240/48
22/96=11/48
2/3=32/48
5/12=20/48
5/24=10/48
1=48/48
Применим формулу разности квадратов: a²-b² = (a-b)(a+b)
(2+x-y)² - (2-x+y)² =
= (2+x-y-(2-x+y))(2+x-y+2-x+y) =
= (2+x-y-2+x-y)(2+x-y+2-x+y) =
= (2x-2y) · 4 =
= 4·2·(x-y) = 8 · (x-y)
28 - 1/2
32 - 4/7
96 - 12/7 = 1 целое 5/7
112 - 2 целых
Ответ: −1 342,25.
Решение: