Evaluate
18yx^{2}
Differentiate w.r.t. x
36xy
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-\frac{1}{3}x^{2}y\left(-54\right)
Multiply x and x to get x^{2}.
\frac{-\left(-54\right)}{3}x^{2}y
Express -\frac{1}{3}\left(-54\right) as a single fraction.
\frac{54}{3}x^{2}y
Multiply -1 and -54 to get 54.
18x^{2}y
Divide 54 by 3 to get 18.
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