Question

Find the product:- (a+1) (a-1) (a^2+1)​

Answer 1

Answer:

a⁴-1

Step-by-step explanation:

As we know that,

(a+b)(a−b)=a²−b²

Therefore,

(a+1)(a−1)(a²+1)

=(a²−1²)(a²+1)

=a⁴−1

Answer 2

Answer:

Step-by-step explanation:

Given that,

( a+ 1 ) ( a - 1 ) ( a² + 1 )

= ( a² - 1 ) ( a ² + 1 ) [ ∵ (a + b ) ( a - b ) = a² - b² ]

= ( a⁴ - 1 ) is the answer.