Question

aduceti la forma cea mai simpla.
(a$^{3} -1)(a^{6} + a^{3} +1$)
(m-1)($m^{2} +m+1)$
(a$^{2} +1)( a^{4} -a ^{2} +1)$
(2a+3b)(4a$^{2}$-6ab+9b$^{2}$)

Answer 1

Folosim formulele:
a³-b³=(a-b)(a²+ab+b²)
a³+b³=(a+b)(a²-ab+b²)
...........................................

1) =a⁹-1
2) =m³-1
3) =a⁶+1