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Tohaina

\left(5-4t\right)\left(5+4t\right)
Tuhia anō te -16t^{2}+25 hei 5^{2}-\left(4t\right)^{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(-4t+5\right)\left(4t+5\right)
Whakaraupapatia anō ngā kīanga tau.