Question

factorise 5a^5-405a​

Answer 1

Answer:

$5a\left(a^2+9\right)\left(a+3\right)\left(a-3\right)$

Step-by-step explanation:

$5a^5-405a$

$5a\left(a^4-81\right)$

$5a\left(a^2+9\right)\left(a+3\right)\left(a-3\right)$