decompose8748 decompose8748
  • 21-05-2018
  • Mathematics
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How do you factor: #y= 2x^3 -32x #?

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altavistard
altavistard altavistard
  • 21-05-2018
Which two factors are common to both terms of the given expression?
One of those factors is 2; the other is x.  

Thus, y= 2x^3 -32x = 2x(x^2-16)

Also note that x^2-16 is easily factorable: 

y = 2x(x-4)(x+4)  (answer)
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