evaluate using sutaible identify 729power2-271power2
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729^2-271^2 = (729+271)(729-271)
= 1000× 458
= 458000
= 1000× 458
= 458000
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![729 {}^{2} - 271 {}^{2} 729 {}^{2} - 271 {}^{2}](https://tex.z-dn.net/?f=729+%7B%7D%5E%7B2%7D++-+271+%7B%7D%5E%7B2%7D+)
![x { }^{2} - y {}^{2} = (x + y)(x - y) x { }^{2} - y {}^{2} = (x + y)(x - y)](https://tex.z-dn.net/?f=x+%7B+%7D%5E%7B2%7D++-+y+%7B%7D%5E%7B2%7D++%3D+%28x+%2B+y%29%28x++-+y%29)
![(729 + 271)(729 - 271) =( 1000)(458) (729 + 271)(729 - 271) =( 1000)(458)](https://tex.z-dn.net/?f=%28729+%2B+271%29%28729+-+271%29+%3D%28+1000%29%28458%29)
![= 458000 = 458000](https://tex.z-dn.net/?f=+%3D+458000)
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