Question

we have, 27 a^3 + 125 b^3 = ( 3a) ^3+ 9)​

Answer 1

Answer:

hey mate,

Step-by-step explanation:

$27a^3 + 125b^3 = (3a)^3 + (5b)^3\\27a^3 + 125b^3 = (3a+ 5b) [( 3a) ^2 - 3a X 5b+ ( 5b)^2] \\(3a + 5b) (9a^2 + 15ab +25b^2)$

thank you