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4 votes
4 votes
In what step did he make an error?

In what step did he make an error?-example-1
User Tim McLean
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2 Answers

6 votes
6 votes
I think it’s step 4. Yea
User Ivan Drinchev
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24 votes
24 votes

Answer:

step 4

Explanation:

because y is equation 2 is -y so the sign should have changed for -2x it should have been +2x since - and - equals to +

User LeonS
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