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The expression 6y^2 - y - 15 can be rewritten as A(y - B)(y - C). Find A + B + C.

 Jan 23, 2021
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y^2 +(- B-C) y + BC = 6y^2 -y-15

 

A = 6   

- B-C = -1                       (    and  BC = -15  )

  B+C = 1

 

then A + B+ C = 6 +1 = 7

 Jan 23, 2021

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