Ответ:
Пошаговое объяснение:
x^2 - 4 = 7x - 14
x^2 - 4 - 7x + 14 = 0
x^2 - 7x + 10 = 0
Δ = 49 - 40 = 9
x1 = (7 + 3)/2 = 10/2 = 5
x2 = (7 - 3)/2 = 4/3 = 2
x = {2; 5}
4/8 = 1/2
25/20 = 5/4 = 1целая 1/4
3/9 = 1/3
10/15 = 2/3
12/10 = 6/5 = 1 целая 1/5
8/6 = 4/3 = 1 целая 1/3
5/25 = 1/5
4/16 = 1/4