Question

QUANTO QUE É (3Z+5X) ELEVADO A 3

Answer 1

Oie, Td Bom?!

$= (3z + 5x) {}^{3}$

$= (3z) {}^{3} + 3 \: . \: (3z) {}^{2} \: . \: 5x + 3 \: . \: 3z \: . \: (5x) {}^{2} + (5x) {}^{3}$

$= 27z {}^{3} + 3 \: . \: 9z {}^{2} \: . \: 5x + 3 \: . \: 3z \: . \: 25x {}^{2} + 125x {}^{3}$

$= 27z {}^{3} + 135xz {}^{2} + 225x {}^{2} z + 125x {}^{3}$

Att. Makaveli1996