Odpowiedzi

2009-10-11T14:35:51+02:00
2009-10-11T14:36:31+02:00
(a-3b)(a+3b)=a²-9b²
(1/2m+n²)(½m-n²)=1/4m²-n^4
(p/3-3q)(3q+p/3)=p²/9-9q²
(x²y+2xy²)(x²y-2xy)²=x^4y²-4x²y^4

^4 - do potegi 4