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NEED HELP ON 17 AND 18!!!

NEED HELP ON 17 AND 18!!!-example-1
User Steve Wong
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2 Answers

4 votes

#17: C+D=0

This is because -4+4 is 0. And 0 is equal to 0...

User Tamakisquare
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6 votes
For question 17 it’s the last one
User Ismnoiet
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