simplify:(a+2)(a-2)(a2+4)
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Step-by-step explanation:
(a+2)(a-2)(a²+4)
(a²-2a+2a-4)(a²+4)
(a²-4)(a²+4)
(a+b)(a-b) is (a²-b²)
So, answer is a⁴-16
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