No, or more accurately "not necessarily".
A negative to any even power is positive. -2, -4, -6 etc. are even, so a negative number raised to any of those powers will be positive.
However, a negative number raised to an odd negative power (-1, -3, -5 etc.) will be negative.
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It will be the same as its positive counterpart to the tenth power.
It does not work that way. A negative power is simply the reciprocal. So that x-a = 1/xa The reciprocal is negative or positive according to whether the number itself is negative or positive. [And, if the number is 0, the reciprocal is not defined.]
The result will be a negative value.
Please consider the following two facts: A negative number to an even power is positive; but a negative number to an odd power is negative. Any positive number is greater than any negative number.
Negative * positive = negative Positive * positive = positive Negative * negative = positive