Question

If a = 3 + b, then the value of a3 - b3 -9ab is

(a) o
(b) 27
(c) -27
(d) None of these​

Answer 1

Answer:

b) 27

Step-by-step explanation:

(a+b)^3=a^3+b^3+3a^2b+3ab^2

so by substituting the value of a as 3+b in the given equation we will get answer as 27