Factor
\frac{30x^{2}y^{2}+35x^{2}-28y^{2}}{140}
Evaluate
\frac{3\left(xy\right)^{2}}{14}+\frac{x^{2}}{4}-\frac{y^{2}}{5}
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\frac{35x^{2}+30x^{2}y^{2}-28y^{2}}{140}
Factor out \frac{1}{140}.
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