Evaluate
-76ba^{3}
Differentiate w.r.t. a
-228ba^{2}
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-91a^{3}b-84a^{4}b^{2}+5a^{3}b+84a^{4}b^{2}+10a^{3}b
Combine 50a^{3}b and -45a^{3}b to get 5a^{3}b.
-91a^{3}b-84a^{4}b^{2}+15a^{3}b+84a^{4}b^{2}
Combine 5a^{3}b and 10a^{3}b to get 15a^{3}b.
-76a^{3}b-84a^{4}b^{2}+84a^{4}b^{2}
Combine -91a^{3}b and 15a^{3}b to get -76a^{3}b.
-76a^{3}b
Combine -84a^{4}b^{2} and 84a^{4}b^{2} to get 0.
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