Odpowiedzi

2010-02-23T22:25:17+01:00
A)
(a-3b)(a+3b)=a2-9b2
b)
(1/2m+n2)(1/2m-n2)=1/4m2-n4
c)
(p/3-3q)(3q+p/3)=(p/3-3q)(p/3+3q)=p2/9 -9q2
d)(x2y+2xy2)(x2y-2xy2)=x4y2-4x2y4