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Can someone explain why this is wrong or did my teacher just make a mistake

Can someone explain why this is wrong or did my teacher just make a mistake-example-1
User Stralsi
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2 Answers

11 votes
It would be 8, you’re correct. The only variation that could impact it is if you’re supposed to include that it could be -8. It would be +/- 8 if they needed an exact answer. Generally 8 is the standard answer to that though, so possibly a mistake there.
User Shas
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7.4k points
11 votes

Answer:

probably a mistake, contact your teacher

Explanation:

User Peachykeen
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