Question

B. Answer
(a) Find the product using suitable identity.
(a + 3) (a-3) (a? +9)​

Answer 1

Answer:

(a+3)(a-3)(a²+9)

=(a²-9)(a²+9)

=a⁴-81 is the answer.....

Answer 2

Answer:

Step-by-step explanation:By using formula, (a+b)(a-b)=a²-b²

(a+3) (a-3)= a²-3²

=a²-9

(a²-9) (a²+9)

By using above formula, a²-b²

(a²)²-9² = a⁴-81 is the answer..

I hope this is helpful....