show that 256 is not a perfect cube
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the smallest required number to multiply 243 to make it a perfect cube is 3. Grouping the prime factors of 256 in triples, we are left over with 2 × 2. ∴ 256 is not a perfect cube
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256 = (2×2×2)×(2×2×2)×2×2
no...this is not a perfect cube....
bcoz there are no three pairs of numbers..
multiply by 2 get the perfect cube number
then
256 ×2 = 512
√512 = √(8×8×8)
√512 = 8
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