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Tohaina

a\left(a^{2}-8ab+16b^{2}\right)
Tauwehea te a.
\left(a-4b\right)^{2}
Whakaarohia te a^{2}-8ab+16b^{2}. Whakamahia te tikanga tātai pūrua pā, p^{2}-2pq+q^{2}=\left(p-q\right)^{2}, ina p=a, ina q=4b.
a\left(a-4b\right)^{2}
Me tuhi anō te kīanga whakatauwehe katoa.