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Which polynomial expression is equal to (a + 3)(a − 3)(a² + 9)?
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3 votes
Which polynomial expression is equal to (a + 3)(a − 3)(a² + 9)?

User Nathan Hyland
by
7.4k points

1 Answer

6 votes

Answer:

a⁴ - 81

Explanation:

Identity applied :

(a + b)(a - b) = a² - b²

Simplifying :

  • (a + 3)(a − 3)(a² + 9)
  • (a² - 9)(a² + 9)
  • a⁴ - 81
User Varsha Vijayvargiya
by
8.3k points
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