Question

a^3 +27b^3 +9ab(a + 3b)​

Answer 1

Step-by-step explanation:

a^3+(3b)^3+3*a*3b(a+3b)= (a+3b)^3

Answer 2

Answer:

(a+3b)^3

Step-by-step explanation:

expansion of (a+3b)^3 = a^3 + 27b^3+ 9ab(a+3b)

same as = (a+b)^3 = a^3 + b^3 + 3ab(a+b)