anonymous
  • anonymous
Find the factors of 2a2 + 9a − 18. (2a − 3)(a + 6) (2a + 3)(a − 6) (2a − 9)(a + 2) (2a − 2)(a + 9)
Mathematics
chestercat
  • chestercat
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swissgirl
  • swissgirl
hmm how abt we dont do the guessing game and just solve it
swissgirl
  • swissgirl
A=2 B=9 and C=-18 So we need to find 2 numbers that when you multiply it equals A*C=2*18=36 and when you add these 2 numbers you get B=9
anonymous
  • anonymous
Yup. Pick an answer choice. Multiply it out and see if you get \(2a^2 +9a -18\)

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anonymous
  • anonymous
i got (2a + 3)(a − 6)
swissgirl
  • swissgirl
Close enough. You gotta sharpen your guessing skills :P
anonymous
  • anonymous
Do you know how to multiply that out? Remember FOIL
Mertsj
  • Mertsj
@brianasosaa You will find many people in this world that you may think of as mean. If you want them to help you, you might have to overlook it.
swissgirl
  • swissgirl
Are you referring to me ? @Mertsj :P
radar
  • radar
Close, but no cigar! Check out the signs.
radar
  • radar
It would of been correct if the expression had of been: 2a^2 - 9a -18 but alas that was not the case.

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