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posted by Anonymous on Thursday, October 10, 2013 at 4:29pm.
subtract (5a^3+a-7)-(8-7a^3-2a^2)
(5a^3+a-7)-(8-7a^3-2a^2) Distribute the negative to the ride side that's in parentheses. (5a^3+a-7)-8+7a^3+2a^2 Combine like terms. 12a^3+2a^2+a-15
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