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OpenStudy (anonymous):
20. (n2 – 3n + 1) – (4n2 + n – 5) 3n2 – 4n + 6 –3n2 – 4n + 6 –3n2 + 4n – 6 3n2 + 4n – 6
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OpenStudy (anonymous):
First open the brackets
OpenStudy (anonymous):
what?
OpenStudy (anonymous):
-(x+y-z)=-x-y+z
OpenStudy (anonymous):
i dont understand
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