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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

c^{2}-\left(x^{2}+2xy+y^{2}\right)
Tuhia anō hei rerekētanga o ngā kīanga e rua.
c^{2}-\left(x+y\right)^{2}
Tuhia anō ngā kīanga hei pūrua.
\left(c-x-y\right)\left(c+x+y\right)
Ka taea te rerekētanga o ngā pūrua te whakatauwehe mā te ture: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).