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posted by corinne on Monday, February 11, 2013 at 8:14am.

Perform the indicated operation (8t^2-4+2)-(5t^2-5t+7)

just add/subtract like powers: 8t^2 - 4t + 2 -(5t^2 - 5t + 7) -------------------- 3t^2 + t - 5

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