Question 883038
(x-3)(2x+4)
We need to multiply x times (2x+4)
and multiply -3 times (2x+4)
then add all of our results together
first x(2x+4)
 x(2x) + x(4)
2x^2 + 4x
second -3(2x+4)
 -3(2x) + -3(4)
 -6x -12
To finish, add
2x^2 + 4x
       -6x -12
= 2x^2 -2x -12