DavidNorgren

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Jul 8th, 2015
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  1. (3x^2-2+4x)(3x^2+2-4x)=
  2. 9x^4+6x^2-12x^3-6x^2-4+8x+12x^3+8x-16x^2=
  3. 9x^4-12x^3+12x^3+6x^2-6x^2-16x^2+8x+8x-4=
  4. 9x^4-16x^2+16x-4
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