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a trinomial was multiplied by 4x and the product was 8x3 - 12x- 4x2

 Dec 12, 2016
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...... and you want to know the original trinomial?    Factor 4x out of the result

 

4x(2x^2 -x -3)         =   8x^3-12x-4x^2

SO the original was  2x^2 -x - 3

 Dec 12, 2016

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