x squared. for example, if you will substitute "4" from "x" then,
x=4;
x²=4²
=16. the small 2 indicates that you will multiply the number by itself.
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x2 means "x squared" aka "x to the power of 2"
If you mean -(x^2) * x then the answer is -x^3 if you mean (-x)^2 * x then the answer is x^3
If you mean: (x - 2)2 Then it can be expanded to: x2 - 4x + 4 If you mean: (x - 2)2 Then it is the same as: 2(x - 2) and can be expanded to: 2x - 4 If you mean: x(-2)2 Then the terms are all multiplied together (a lack of operator between a term and adjacent parentheses indicates multiplication. i.e. 2(3) is the same as 2 × 3): -4x And finally if you mean: x - (2)2 Then the answer is: x - 4
It means 2 x 2 x 2 which is also volume. :)
if you mean y=(x+2)/x, the range is all reals except y=1 If you mean y=x+2/x, the range is (-inf, -2sqrt(2)] U [2sqrt(2),+inf)