Odpowiedzi

2010-03-01T16:46:43+01:00
2 bok= 4x+6y-3y-x= 3x+3y

pole= (3x+3y)*(3y-x)=9xy-3x do kwadratu+9y do kwadratu-3xy=6xy+3x do kwadratu+9y do kwadratu
3 2 3
2010-03-01T16:47:40+01:00
4x+6y = 2(3y-x) + 2(ax)
4x+6y = 6y - 2x + 2ax
6x = 2ax
3x = ax
a=3
4x+6y=6y-2x+6x=6y+4x - sprawdzenie
Wzór: P= z x c
z = 3y-x
c = 3x

P = 3x(3y-x)

P= 9xy-3xx - to ostatnie to x do kwadratu
2 3 2