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Anonymous
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Daphnee Stark ∙
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(4/7)^3 = (4^3)/(7^3) = 64/343 (≈ 0.187 as a decimal).
They are all perfect cubes. 8 = 23, 27 = 33, 343 = 73, 64 = 43 and 125 = 53.
512, 729
(4x + 7)(16x2 - 28x + 49)
1, 8, 27, 64, 125, 216, 343