Which number is the additive inverse of itself?
Every real number x has an additive inverse (i.e. an inverse with respect to addition) given by ? x. Every nonzero real number x has a multiplicative inverse (i.e. an inverse with respect to multiplication) given by frac 1{x} (or x ? 1). By contrast, zero has no multiplicative inverse, but it has a unique quasi-inverse, 0 itself. So your answer is 0 :)
The answer is: 0 (zero) An additive inverse would be -4 + 4 0 or -7 + 7 0 So, the only thing that can be an additive inverse of itself would be -0 + 0 0 Hope that helps.
No it will just smell bad