alane132 alane132
  • 04-08-2017
  • Mathematics
contestada

5x​2​​−320 factored completely?

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kphung76127
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)
Answer Link
Patrici33
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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