alane132 alane132

04-08-2017
Mathematics

contestada

5x2−320 factored completely?

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kphung76127 kphung76127

04-08-2017

First take out the GCF (5)
5(x^2-64)
It's a perfect square so we can go further
5(x+8)(x-8)

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Patrici33 Patrici33

04-08-2017

First factor out the 5 so you have 5(x2-64). Since (a+b)(a-b)=(a^2-b^2)
(x^2-64)=(x-8)(x+8). So completely factored is 5(x-8)(x+8).

Answer Link

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