Additive inverse

These complex numbers, two of eight values of 8√1, are mutually opposite

In mathematics, the additive inverse of a number $a$ is the number that, when added to $a$ , yields zero. This number is also known as the opposite (number), sign change, and negation. For a real number, it reverses its sign: the opposite to a positive number is negative, and the opposite to a negative number is positive. Zero is the additive inverse of itself.

单词	Unary minus
释义	Unary minus 英语百科 Additive inverse In mathematics, the additive inverse of a number $a$ is the number that, when added to $a$ , yields zero. This number is also known as the opposite (number), sign change, and negation. For a real number, it reverses its sign: the opposite to a positive number is negative, and the opposite to a negative number is positive. Zero is the additive inverse of itself.
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Unary minus

Additive inverse