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What are variables, expressions, and equations? | Introduction to algebra | Algebra I | Khan Academy
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How to solve equations of the form ax = b | Linear equations | Algebra I | Khan Academy
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Solving a more complicated equation | Linear equations | Algebra I | Khan Academy
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Introduction to solving an equation with variables on both sides | Algebra I | Khan Academy
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Algebra: Linear equations 4 | Linear equations | Algebra I | Khan Academy
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Algebra: Solving Inequalities
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Algebra: graphing lines 1
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Algebra: Slope and Y-intercept intuition
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Algebra: Slope
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Algebra: Slope 2
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Algebra: Slope 3
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Algebra: Equation of a line
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Slope and Y-intercept Intuition
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Averages | Linear equations | Algebra I | Khan Academy
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Integer sums
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Taking percentages | Linear equations | Algebra I | Khan Academy
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Growing by a percentage | Linear equations | Algebra I | Khan Academy
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Percent word problem example 1 | Ratios, rates, and percentages | 6th grade | Khan Academy
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More percent problems | Linear equations | Algebra I | Khan Academy
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systems of equations
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Introduction to ratios | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy
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Ratio problem with basic algebra | Linear equations and inequalities | Algebra Basics | Khan Academy
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More advanced ratio problem--with Algebra (HD version)
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Alternate Solution to Ratio Problem (HD Version)
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Introduction to Ratios
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Advanced ratio problems
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Age word problems 1 | Linear equations | Algebra I | Khan Academy
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Age word problems 2 | Linear equations | Algebra I | Khan Academy
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Age word problems 3 | Linear equations | Algebra I | Khan Academy
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Level 1 multiplying expressions
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Solving a quadratic by factoring | Quadratic equations | Algebra I | Khan Academy
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Introduction to i and imaginary numbers | Imaginary and complex numbers | Precalculus | Khan Academy
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Calculating i raised to arbitrary exponents | Precalculus | Khan Academy
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i as the principal root of -1 (a little technical) | Precalculus | Khan Academy
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Complex Numbers (part 1)
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Complex Numbers (part 2)
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Introduction to the quadratic equation | Quadratic equations | Algebra I | Khan Academy
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Quadratic equation part 2 | Quadratic equations | Algebra I | Khan Academy
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Completing the square
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Quadratic formula (proof) | Quadratic equations | Algebra I | Khan Academy
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Quadratic inequalities | Polynomial and rational functions | Algebra II | Khan Academy
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Quadratic inequalities (visual explanation) | Algebra II | Khan Academy
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Introduction to functions
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Functions Part 2
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Functions (Part III)
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Functions (part 4)
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Domain of a function | Functions and their graphs | Algebra II | Khan Academy
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Proof: log a + log b = log ab | Logarithms | Algebra II | Khan Academy
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Proof: a log b = log(b^a), log a - log b = log(a/b) | Logarithms | Algebra II | Khan Academy
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Proof: log_a (B) = (log_x (B))/(log_x (A))