3 cubed means 3x3x3. To start, 3x3=9. Then, 9x3=27. That's all there is to it.
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No because 3 cubed is 27 which is a rational number
x^3 - x^3 = 0 Remember , whilst 'x' is an unknown value, that unkonwn is a fixed value. As a numerical example 3^(3) - 3^(3) = 27 - 27 = 0 The '3' is 'x' in this case
Yes
3 squared is 3 to the 2nd power, or 3 multiplied by 33 squared=3x3=93 cubed is 3 to the 3rd power or 3 multiplied by 3 multiplied by 33 cubed=3x3x3=27
(x - 3)(x2 + 3x + 9)