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Tohaina

7\left(2mn^{2}-n^{4}-m^{2}\right)
Tauwehea te 7.
-m^{2}+2n^{2}m-n^{4}
Whakaarohia te 2mn^{2}-n^{4}-m^{2}. Whakaarohia te 2mn^{2}-n^{4}-m^{2} hei pūrau ki runga i te taurangi m.
\left(m-n^{2}\right)\left(-m+n^{2}\right)
Kimihia he tauwehe o te āhua km^{p}+q, e wehea ai e km^{p} te huatahi me te pū nui rawa -m^{2}, e wehea hoki e q te tauwehe pūmau -n^{4}. Ko tētahi tauwehe pērā ko m-n^{2}. Whakatauwehea te pūrau mā te whakawehe ki tēnei tauwehe.
7\left(m-n^{2}\right)\left(-m+n^{2}\right)
Me tuhi anō te kīanga whakatauwehe katoa.