decompose8748 decompose8748

21-05-2018
Mathematics

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How do you factor: #y= 2x^3 -32x #?

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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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