Question

(a+1)( a-1)(a2 +1)= ?​

Answer 1

Answer:

a⁴ - 1

Step-by-step explanation:

(a+1)(a-1) = a² - 1

(a² - 1)(a² + 1) = a⁴ - 1

Answer 2

(a+1)(a-1)(a^2+1)

(a^2-1)(a^2+1) (by a^2-b^2=(a+b)(a-b)

(a^2)^2-1^2

a^4-1

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