Sometimes.* If "n" is positive, "-n" is negative.
* If "n" is negative, "-n" is positive.
* If "n" is zero, "-n" is also zesro.
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The square of a number is always two numbers multiplied together. A positive times a positive is always positive, and a negative times a negative is always positive.
When you multiply a positive number by a negative number you always get a negative number.
The product of negative number and a positive number is always a negative. The product of two positive numbers, or two negative numbers, is always a positive.
No
Yes, the absolute value for an negative number is always positive.