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OpenStudy (anonymous):
(2z^2+13)-(9z^2+9)
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OpenStudy (mertsj):
First, remove the second set of parentheses by changing everything inside to its opposite.
OpenStudy (anonymous):
ok and then what
OpenStudy (mertsj):
Add the like terms
OpenStudy (anonymous):
so whats the answer
OpenStudy (mertsj):
What did you get?
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