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Tohaina

2\left(f^{2}-25\right)
Tauwehea te 2.
\left(f-5\right)\left(f+5\right)
Whakaarohia te f^{2}-25. Tuhia anō te f^{2}-25 hei f^{2}-5^{2}. Ka taea te rerekētanga o ngā pūrua te whakatauwehe mā te ture: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
2\left(f-5\right)\left(f+5\right)
Me tuhi anō te kīanga whakatauwehe katoa.