Factor the Expression Over the Set of Complex Numbers $4 a ^ { 2 } + 9$

question 98

Multiple Choice

Factor the expression over the set of complex numbers $4 a ^ { 2 } + 9$

• A) \(\quad ( 2 + 3 i ) ( 2 - 3 i )\)
• B) \(\quad ( 2 a + 3 ) ( 2 a - 3 )\)
• C) \(\quad ( - 2 a + 3 i ) ( - 2 a + 3 i )\)
• D) \(\quad ( 2 a + 3 i ) ( 2 a - 3 i )\)
• E) \(\quad ( 2 a + 3 i ) ( 2 a + 3 i )\)

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