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1.
代数习题课 74-Discriminant of Quadratic Equations
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2.
代数习题课 73-Proof of Quadratic Formula
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3.
代数习题课 72-Using the Quadratic Formula
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4.
代数习题课 71-Solving Quadratic Equations by Completing the Square
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代数习题课 70-Solving Quadratic Equations by Square Roots
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6.
代数习题课 69-Solving Quadratic Equations by Graphing
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7.
代数习题课 68-Graphs of Quadratic Functions
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代数习题课 67-Factor by Grouping and Factoring Completely
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代数习题课 66-Factoring Special Products
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10.
代数习题课 65-Factoring Quadratic Expressions
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