Odpowiedzi

2009-10-19T15:55:39+02:00
(⅓a + 2 )³ + 27= (⅓a + 2 )(⅓a + 2 )(⅓a + 2 )+27



(2a - 3)³-1/27=(2a - 3)(2a - 3)(2a - 3)-1/27


o to chodzi? czy tak że w postaci a*b?
1 5 1
2009-10-19T16:00:02+02:00
(⅓a + 2 )³ + 27
1/27a³+ 8 + 3*1/3a^2*2 + 3*2^2*1/3a + 27 =
1/27a³+8+ 2/3a +4a + 27 =
1/27a³ + 35 + 4 2/3a =

(2a - 3)³-1/27 =
8a³ - 3*2a^2*3 + 2*2a*3^2 - 29 - 1/27 =
8a³ - 36a^2 + 36a - 29 - 1/27 =
8a³ - 36a^2 + 36a - 29 1/27
1 5 1