SOLUTION: I could really use some help. (4a+7)^2

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Question 853494: I could really use some help. (4a+7)^2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the FOIL method,
%284a%2B7%29%5E2=%284a%2B7%29%284a%2B7%29
First : 4a%284a%29=16a%5E2
Outer : 4a%287%29=28a
Inner : 7%284a%29=28a
Last : 7%287%29=49
%284a%2B7%29%5E2=16a%5E2%2B28a%2B28a%2B49
%284a%2B7%29%5E2=16a%5E2%2B56a%2B49