Question

(a+3b)^3 please answer very urgent ​

Answer 1

Heya mate ▪️◾◼️

Using identity

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

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

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

(a+3b)^3=a^3+ 27b^3 +9a^2 b +27ab^2.

hope it helps you. plz mark as brainliest

Answer 2

Answer:

using the identity (x+y)^3=x^3+y^3+3x^2y+3xy^2

a^3+3b^3+3a^23b+3a3b^2

a^3+27b^3+9a^2b+27ab^2

hope this helpful for you