Evaluate
77x^{2}-7xy+3y^{2}
Differentiate w.r.t. x
154x-7y
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77x^{2}-2y^{2}-7xy+5y^{2}
Combine 2x^{2} and 75x^{2} to get 77x^{2}.
77x^{2}+3y^{2}-7xy
Combine -2y^{2} and 5y^{2} to get 3y^{2}.
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