Pre-Calculus

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http://www.mediafire.com/view/?4jobeqosrm9qwf5 you can find 6 questions...

http://www.mediafire.com/view/?4jobeqosrm9qwf5

you can find 6 questions, I solved 4 of them (check if they are true, please), the other 2 questions I couldn't solve since I couldn't understand so need you to solve them with explanation

you can find 6 questions, I solved 4 of them (check if they are true, please), the other 2 questions I couldn't solve since I couldn't understand so need you to solve them with explanation

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