Felixbros Felixbros

07-12-2016
Mathematics

contestada

help me guys, please

help me guys please class=

Respuesta :

07-12-2016

c^2 + 3c - 40 = 0

consider the factors of -40: ±40, ±1, ±8, ±5...those last two could work, if you pair them right. try:

(c + 8)(c - 5)

8 - 5 = 3 and 8*(-5) = -40 so there u go

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good job