Dan B.

asked • 07/26/16

Factor completely

4w-49w^3
 
if polynomial state this

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Inactive Tutor answered • 07/26/16

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This is a polynomial.
 
4w-49w3 = w(4 - 49w2)
             = w(2 + 7w)(2 - 7w)
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Inactive Tutor

Dan, this is one of those patterns (this one called, "difference of squares") that you should memorize:
   (x2 - y2) = (x+y)(x-y)          [verify using F-O-I-L]
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07/26/16

Dan B.

Is it prime?
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07/26/16

Dan B.

Not that it's prime sorry. But the answer I came up with is -1w(7w+2)(7w-2)
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07/26/16

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