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Cube-Root of Product of Numbers

Prove that if...

Question

Prove that if a number is doubled, then its cube is eight times the cube of the given number.

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Solution

let a number = a
it's cube will be a×a×a = a³

now atq 2a
it's cube will be
2a ×2a ×2a => 8a³ or (2a)³

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Cube-Root of Product of Numbers

Standard VIII Mathematics

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