Answer :
The additive inverse of -2, is 2, thus, Laura's error was: The 8 should have remained positive
What is Additive Inverse?
Additive inverse of a number is gotten by multiplying the number by -1. When you add the additive inverse and the number, it would give zero. For example, additive inverse of -2 is 2.
Based on what additive inverse of a number is, to find the difference, Laura shouldn't have included the negative sign to 2.
Therefore, her error is: The 8 should have remained positive
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