Odpowiedzi

2010-02-23T18:22:09+01:00
X-y=2 -------> x = y + 2
xy=48 x1 = -8
x2 = 6
(y + 2)y = 48
y² + 2y - 48 = 0
y1 = 6
y2 = -8

odp
x1 = -8 x2 = 6
y1 = 6 y2 = -8

.......................................................................
x+2y=6
y=x2+1

x + 2(2x + 1) = 6
x + 4x + 2 = 6
5x = 4 /5

x = ⅘