Question

sabendo que a=2a e c=6a^2, calcule (c/a)^3 e (5c) ^2

Answer 1

a = 2a
c = 6a²
c/a =  ( 2a/6a² )³  = ( 1/3a)³ = 1/ 27a³

( 5c)²  = ( 5 * 6a²)² =( 30a² )² = 900 a^4