Factor
\frac{\left(5x-y\right)\left(5x+y\right)\left(25x^{2}+y^{2}\right)}{625}
Evaluate
-\frac{y^{4}}{625}+x^{4}
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\frac{625x^{4}-y^{4}}{625}
Factor out \frac{1}{625}.
\left(25x^{2}-y^{2}\right)\left(25x^{2}+y^{2}\right)
Consider 625x^{4}-y^{4}. Rewrite 625x^{4}-y^{4} as \left(25x^{2}\right)^{2}-\left(y^{2}\right)^{2}. The difference of squares can be factored using the rule: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\left(5x-y\right)\left(5x+y\right)
Consider 25x^{2}-y^{2}. Rewrite 25x^{2}-y^{2} as \left(5x\right)^{2}-y^{2}. The difference of squares can be factored using the rule: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\frac{\left(5x-y\right)\left(5x+y\right)\left(25x^{2}+y^{2}\right)}{625}
Rewrite the complete factored expression.
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Limits
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