SOLUTION: It has been a long time and I need a refresher course. Can you help me solve (-6x-7y^2)^2

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Question 852873: It has been a long time and I need a refresher course.
Can you help me solve (-6x-7y^2)^2
Answer by Seutip(231) About Me  (Show Source):
You can put this solution on YOUR website!
%28-6x-7y%5E2%29%5E2
Means;
%28-6x-7y%5E2%29%28-6x-7y%5E2%29
The shortcut is actually;
Square of first term + 2 time first term times last term + square of last term
%28-6x%29%5E2%2B%282%29%28-6x%29%28-7y%5E2%29%2B%28-7y%5E2%29%5E2
36x%5E2%2B84xy%5E2%2B49y%5E4
Thanks!
Hope that helps!
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