Odpowiedzi

2009-05-31T17:01:50+02:00
{b-a=20
{ab=2400

{a=b-20
{(b-20)*b - 2400 = 0

b²-20b - 2400 = 0
delta = 400 + 9600 = 10000
√z delty = 100

{b=60 lub {b=-40
{a=40 lub {a=-60