X (or any letter) is a variable; you can not know the initial value unless the question specifically states what it is.
It can be manipulated into varying written forms; but the X notation itself will remain a variable.
When given a variable in the form of a letter; the only thing you can typically assume is that it is different from the other letters in the equation in some way or it would likely just have the same letter used multiple times throughout. (though this is not always an accurate assumption, there are cases where different letters end up being the same number, they just were not known at the start of the equation and are thus being represented by different variable letters)
Alternate written methods:
X to the third power = X^3 = (X)(X)(X)
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
x to the power of 6.
Totally dependent on the value of x eg if x = 1 then answer is -48 If x = 10 then answer is 1500... If x = -5 answer is 0
1 cm cubed = 1 cm X 1 cm X 1 cm 1 cm = .01 m, so 1 cm cubed = .01 m X .01 m X .01 m Therefore, 1 cm cubed = .000001 m cubed, and 243 cm cubed = 243 X .000001 = .000243 m cubed. In summary, multiply cm cubed by .000001 to get m cubed.
4.6 cubed = 4.63 = 4.6 x 4.6 x 4.6 = 97.336
it is x to the sixth power
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
2x4
Six cubed means six to the third power or 6 x 6 x 6. That would be 216.
6 x 6 x 6 = 216
9 x 9 x 9 = 729
X cubed - X cubed is zero.
This has infinitely many solutions. The idea is to solve the equation for one of the variables, say for "y". The solution will be in terms of "x" in this case. Then, if you assign any value to "x", you can calculate the corresponding value for "y".
That's the same as (-15) x (-15) x (-15). "Cubed" means that the number is multiplied by itself, appearing three times as a factor.
It's a third-degree polynomial in 'x'. It's value depends on the value of 'x'. Every time 'x' changes, the value of the polynomial changes.
X 2 cubed
x to the power of 6.