The cube of twice a number.

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The cube of twice a number.


The cube of twice a number x is 8x³

Let the number be represented by x

  • Twice the number = 2x
  • The cube of twice the number = (2x)³

Removing the parenthesis by expanding the expression above:

The cube of twice the number = 2³(x³)

The cube of twice the number = 8x³

Hence the cube of twice a number x is 8x³

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