koalarules6
koalarules6
03-01-2017
Mathematics
contestada
Express as a trinomial.
(x−8)(2x+9)
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apologiabiology
apologiabiology
03-01-2017
basically expand
use FOIL (a way to remember distributive property)
first outer inner last
that is th eorder to multiply them
First: x times 2x=2x²
Outer: x tmes 9=9x
Inner: -8 times 2=-16x
last: -8 times 9=-72
add them
2x²+9x-16x-72
2x²-7x-72
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