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Tohaina

5\left(21n^{3}+35n^{2}-15n-25\right)
Tauwehea te 5.
\left(3n+5\right)\left(7n^{2}-5\right)
Whakaarohia te 21n^{3}+35n^{2}-15n-25. Tā te Rational Root Theorem, ko ngā pūtake whakahau katoa o tētahi pūrau kei te āhua o \frac{p}{q}, ina wehea e p te kīanga pūmau -25, ā, ka wehea e q te whakarea arahanga 21. Ko tetahi pūtake pērā ko -\frac{5}{3}. Tauwehea te pūrau mā te whakawehe mā te 3n+5.
5\left(3n+5\right)\left(7n^{2}-5\right)
Me tuhi anō te kīanga whakatauwehe katoa. Kāore te pūrau 7n^{2}-5 i whakatauwehea i te mea kāhore ōna pūtake whakahau.