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The Completing the Square Method by Yongcheng Chen
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The Completing the Square Method
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The Mass Points Method by Yongcheng Chen
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The Mass Points Method
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Mathcounts State Competition Preparation Volume 3 by Yongcheng Chen
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Mathcounts State Competition Preparation Volume 3
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The Substitution Method by Yongcheng Chen
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The Substitution Method
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Problem Solving Using Auxiliary Lines by Yongcheng Chen
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Problem Solving Using Auxiliary Lines
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Fifty Lectures for Mathcounts Competitions (1) Solution Manual by Yongcheng Chen
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Fifty Lectures for Mathcounts Competitions (1) Solution Manual
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American Mathematics Competitions (AMC 8) Preparation (Volume 7) by Yongcheng Chen
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American Mathematics Competitions (AMC 8) Preparation (Volume 7)
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Mathcounts National Competition Solutions by Yongcheng Chen
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Mathcounts National Competition Solutions
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Problem Solving Using the AM-GM Inequality by Yongcheng Chen
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Problem Solving Using the AM-GM Inequality
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Problem Solving Using the Discriminant by Yongcheng Chen
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Problem Solving Using the Discriminant
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Eleven Years Mathcounts State Competition Solutions by Sam Chen
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Eleven Years Mathcounts State Competition Solutions
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American Invitational Mathematics Examination (AIME) Preparation (Volume 3) by Yongcheng Chen
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American Invitational Mathematics Examination (AIME) Preparation...
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Mathcounts State Competition Preparation Volume 2 by Yongcheng Chen
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Mathcounts State Competition Preparation Volume 2
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Mathcounts Solutions by Yongcheng Chen
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Mathcounts Solutions
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American Invitational Mathematics Examination (AIME) Preparation (Volume 2) by Yongcheng Chen
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American Invitational Mathematics Examination (AIME) Preparation...
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American Mathematics Competitions (AMC 10) Preparation Practice Tests by Yongcheng Chen
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American Mathematics Competitions (AMC 10) Preparation Practice Tests
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Mathcounts National Competition Team Round Solutions 2001 to 2010 by Yongcheng Chen
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Mathcounts National Competition Team Round Solutions 2001 to 2010
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Fifty Lectures for Mathcounts Competitions (2) Solution Manual by Yongcheng Chen
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Fifty Lectures for Mathcounts Competitions (2) Solution Manual
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The Area Method by Yongcheng Chen
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The Area Method
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Problem Solving Using Vieta's Theorem by Yongcheng Chen
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Problem Solving Using Vieta's Theorem
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Mathcounts School Competition Practice by Yongcheng Chen
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Mathcounts School Competition Practice
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Eleven Years Mathcounts Chapter Competition Solutions by Yongcheng Chen
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Eleven Years Mathcounts Chapter Competition Solutions
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American Invitational Mathematics Examination (AIME) Preparation (Volume 1) by Yongcheng Chen
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American Invitational Mathematics Examination (AIME) Preparation...
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Problem Solving Using Cauchy's Inequality by Yongcheng Chen
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Problem Solving Using Cauchy's Inequality
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Fifty Lectures for Mathcounts Competitions (3) Solution Manual by Yongcheng Chen
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Fifty Lectures for Mathcounts Competitions (3) Solution Manual
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Mathcounts Solutions by Yongcheng Chen
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Mathcounts Solutions
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Mathcounts Solutions by Yongcheng Chen
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Mathcounts Solutions
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Fifty Lectures for Mathcounts Competitions (2) by Sam Chen
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Fifty Lectures for Mathcounts Competitions (2)
by Sam Chen ~ Paperback / softback
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Problem Solving Using the Rearrangement Inequality by Yongcheng Chen
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Problem Solving Using the Rearrangement Inequality
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