Odpowiedzi

Najlepsza Odpowiedź!
2010-03-25T20:24:41+01:00
(2+m)²=2*2+2*2*m+m*m= 4+4m+m²
(6x+4)²=2*6x+2*6x*4+4*4=12x+48x+16 = 60x+16
(3x+4y)²=9x²+24xy+16y²
(t-8)²=t²-16t+64
(3p-6)²=9p²-36p+36
(10k-3l)²= 100k²-60kl+9l²
(z+4)(z-4)= z²-4z+4z-16=z²-16
(3k+2)(3k-2)=9k²-4
(5m-3t)(5m+3t) =25m²-9t²