samantha187 samantha187

21-02-2017
Mathematics

contestada

7x square- 20x-3 solving ax square+bx+c=0 by factoring

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morgeron morgeron

21-02-2017

we first have to find the factors of 7 and -3 and see which ones add up to -20.

factors of 7 are 1 and 7 factors of -3 are -1 and 3
7 and 1 -3 and 1

therefore, we get (x - 3) (7x + 1)

we can use the FOIL method to verify the answer.

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