Question

Simplify (2a+3b)^3+(2a-3b)^3

Answer 1

Here's your answer mate!!

Using identities

$= 8 {a}^{3} + 27 {b}^{3} + 36 {a}^{2} b + 54a {b}^{2} + 8 {a}^{3} + 27 {b}^{3} + 36 {a}^{2} b - \\ 54a {b}^{2} \\ = 16 {a}^{3} + 54 {b}^{3} + 72 {a}^{2} b$
Hope it Helps !!

Thanks