Question

(a + 3 ) ( a - 3 ) ( a² + 9 )
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Answer 1

Answer:

(a² -9) ( a²+ 9)

= ( a⁴ - 81)

Explanation:

hope thats correct

Answer 2

Answer:

$(a + 3 ) ( a - 3 ) ( a² + 9 ) \\ \\{ ( {a}^{2}) - ({3)}^{2} } {( a}^{2} + {3}^{2} )$