Odpowiedzi

2009-10-11T13:40:55+02:00
=(3x)2 +2*3x*y +y2 = 9x2 +6xy +y2

=25x2 +5xy+1/4y2

=16x2-16xz+4z2

=1/4-y2+y4

=1/4a2+1/3ab+1/9b2

2=do kwadratu
4=do 4 potegi
2009-10-11T14:17:39+02:00
(3x+y)2=(3x)2+2*3x*y+y2=9x2+6xy+y2
(5x+1/2y)2=25x2+2x+1/4y2
(4x-2z)2=16x2-16xz+4z2
(1/2x-y2)2=1/4x2-1/x*y2+y4
(1/2a+1/3b)2=1/4a2+1/3ab+1/9b2