Question

Express as a trinomial.
(x−8)(2x+9)

Answer 1

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