Odpowiedzi

2009-11-02T11:30:28+01:00
C) 7(z²-2)-4(z-3)(z+3)=3z²+22
L:7z²-14-4(z²-9)=7z²-14-4z²+36=3z²+22
zatem L=P
d) 10(a²-15)-12(a-4)(a+4)=42-2a²
L:10a²-150-12(a²-16)=10a²-150-12a²+192=-2a²+42=42-2a²
zatem L=P