Is a negative number a real number?

Yes, any positive or negative number is a real number, including 0. Non real (or imaginary) numbers are the ones that have an "i" or "j" such as j1.5 or 1.5i The imaginary numbers come from...

Yes, examples include -4, -134, -2/9, -143/12.

Think of a negative number as a number on a piece of paper to remind yourself you owe that number to someone. For example, think of -2 as a debt of $2. So if you have in your wallet a note for 2 that...

Positive, so any number squared is positive, i.e. -32 = 9

A negative multiplied by another negative will always give a positive answer. E.g. -4 x - 3 = 12