Question

(3a-2b)³+(3a + 2b)³ = 18a(3a² + 4b²)​

Answer 1

Ответ:

(3a-2b)^3+ (3a+2b)^3= =27a^3-54a^2b+36ab^2-8b^3+27a^3+54a^2b+36a

b^2+8b^3=

=54a^3+72ab^2=18a(3a^2+4b^2)