Question

Find the product using suitable identity
(a+3) (a-3) (a²+9)

Answer 1

Answer:

a^4-81

Step-by-step explanation:

Using farmula (a+b) (a-b) =a^2-b^2

Answer 2

Answer:

(a²-3²)² =a²+9

(a+b)(a-b)=a²-b²

(a²)²-(3²)²

a⁴-81

Ans :a⁴-81

here is your answer hope it helps you .