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06-11-2018
Mathematics

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r^2+6r-40 factor each expression

Respuesta :

06-11-2018

(r + 10)(r - 4)

To double check:
r * r is r^2

10 * r = 10r; -4 * r = -4r
Combine to get 6r.

-4 * 10 = -40

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