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Tohaina

25\left(4-w^{2}\right)
Tauwehea te 25.
\left(2-w\right)\left(2+w\right)
Whakaarohia te 4-w^{2}. Tuhia anō te 4-w^{2} hei 2^{2}-w^{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).
\left(-w+2\right)\left(w+2\right)
Whakaraupapatia anō ngā kīanga tau.
25\left(-w+2\right)\left(w+2\right)
Me tuhi anō te kīanga whakatauwehe katoa.