x to the fourth (x4)
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The square root of a perfect square and the cube root of a perfect cube is always an integer. A perfect square is a number multiplied by itself. A perfect cube is a number multiplied by itself twice. Example: 3 x 3 is 9, the square of 3 3 x 3 x 3 is 27, the cube of 3
The cube is multiplied by 53 = 125.
The cube root of 54 isn't an integer. 2 x 2 = 4, the cube root of 64.
The vo;ume of a cube is s-cubed, that is, the length of one side (or edge) multiplied by itself 3 times. In this case it is 3 x 3 x 3 = 27.
If you multiplied a number by 4, then the cube of the number would be increased by a factor of 16.