Odpowiedź :
x = 2ab
y = 5-2ab
O = 2x + 2y = 2(2ab) + 2(5-2ab) = 4ab + 10 -4ab = 10
P = xy = 2ab(5-2ab) = 10ab - 4(ab)^2
y = 5-2ab
O = 2x + 2y = 2(2ab) + 2(5-2ab) = 4ab + 10 -4ab = 10
P = xy = 2ab(5-2ab) = 10ab - 4(ab)^2