Question

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

Answer 1

Answer:

this is your answer

hope it helps you!!!!

Answer 2

Using a2 - b2 = (a+b)( a-b) identity

$(a + 3)(a - 3)( {a}^{2} + 9) \\ ({a}^{2} - {3}^{2} )( {a}^{2} + 9) \\ ({a}^{2} - {3}^{2} )( {a}^{2} + {3}^{2} ) \\ ( {a}^{2} ) {}^{2} - (3 {}^{2} ) {}^{2} \\ {a}^{4} - {3}^{4}$

see the solution given above. hope you get it thank you