Evaluate
-21yx^{2}
Differentiate w.r.t. x
-42xy
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\frac{-24xy\times 7}{8}x
Divide -24xy by \frac{8}{7} by multiplying -24xy by the reciprocal of \frac{8}{7}.
\frac{-168xy}{8}x
Multiply -24 and 7 to get -168.
-21xyx
Divide -168xy by 8 to get -21xy.
-21x^{2}y
Multiply x and x to get x^{2}.
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