SOLUTION: I dont understand how to do the problem in detailed form. (3ab+a^2+b^2)-(a^2-3b^2-5ab)

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Question 143120: I dont understand how to do the problem in detailed form.
(3ab+a^2+b^2)-(a^2-3b^2-5ab)
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify:
%283ab%2Ba%5E2%2Bb%5E2%29-%28a%5E2-3b%5E2-5ab%29 First, remove the parentheses...and remeber to change the sign of each term inside the second set of parentheses.
3ab%2Ba%5E2%2Bb%5E2-a%5E2%2B3b%5E2%2B5ab Now group the like-terms together.
%283ab%2B5ab%29%2B%28a%5E2-a%5E2%29%2B%28b%5E2%2B3b%5E2%29 Perfom the indicated operations in each group.
%288ab%29%2B%280%29%2B4b%5E2%29 Simplify.
8ab%2B4b%5E2 Now you could factor out 4b to get:
4b%282a%2Bb%29 but either answer is correct.