SOLUTION: multiply (x-3)(2x+4) help me solve please show steps!

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Question 883038: multiply (x-3)(2x+4) help me solve please show steps!
Found 2 solutions by jim_thompson5910, LinnW:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
ERROR Algebra::Solver::Engine::invoke_solver_noengine: solver not defined for name 'foil'.
Error occurred executing solver 'foil' .

Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
(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