destrydineen destrydineen

25-04-2017
Mathematics

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(X+4)(y^2+2y-12) multiplying polynomials

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feliciamarie321 feliciamarie321

25-04-2017

(x^2+x+4)(x-4)
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= (x^2+x+4)x - (x^2+x+4)4
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= x^3+x^2+4x -4x^2-4x-16
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= x^3-3x^2+16
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Add:
(8x^2-xy+y^2)+(-x^2-4xy+6y^2
---
= 7x^2-5xy+7y^2
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mohabbasem mohabbasem

25-04-2017

(x+4)(y^2+2y-12) = xy^2+2xy-12x+4y^2+8y-48

I hope that helped.

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