Answers

2016-06-21T18:13:56+08:00
F-irst
O-utside
I-nside
L-ast

Ex: (5+3d)(2+6d)
1. Multiply the 5 and 2 because it is the first term in the parenthesis.
2. Now, we'll multiply 6d and 5 because it is both on the other sides.
3. We are also going to multiply 3d and 2 because it is both on the inside portion.
4. Lastly, we're going to multiply 3d and 6d because it is both the last term.

(5+3d)(2+6d)
=10+30d+6d+18d to the second power
=10+36d+18d to the second power
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