Question

2a ala 5 menos 162a ala 3

Answer 1

2^5 - 162^3
2^5 = 32
162^3 = 4'251.528
32 - 4'251.528 =
-4'251.496

Espero que te sirva... :)

Answer 2

Factor común:

$2a^{5} -162 a^{3} =2 a^{3} ( a^{2}-81 )$