Evaluate
7a^{2}+7ab+5b^{2}
Differentiate w.r.t. a
7\left(2a+b\right)
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7a^{2}+4ab+5b^{2}+3ab
Combine 4a^{2} and 3a^{2} to get 7a^{2}.
7a^{2}+7ab+5b^{2}
Combine 4ab and 3ab to get 7ab.
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