Odpowiedzi

2010-04-14T23:07:27+02:00
X-y=5
x+y=11

x=5+y
x+y=11

5+y+y=11
5+2y=11 / -5
2y=6
y=3

x=5+y
x=5+3
x=8

x kwadrat + y= ?

8 kwadrat + 3 = 67

liczę na naj ; D
2010-04-14T23:12:43+02:00
X-y=-5
x+y=11

2x=14
x=7

7+y=11
y=4

x2+y2=7(do kwatratu)+4(do kwadratu)= 65