Algebra for College Students
Robert F. Blitzer
Algebra for College Students - A book resource
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Wolfram MathWorld
MathWorld is an online mathematics encyclopedia from Wolfram Research offering detailed, browsable articles on topics across the math spectrum, including algebra, geometry, calculus, and number theory. Each entry includes definitions, theorems, formulas, diagrams, worked examples, and links to further reading.
Purplemath
Purplemath lesson on the end behavior of polynomial graphs: how degree parity and the sign of the leading coefficient determine whether each end rises or falls. Worked examples let students sketch or match a polynomial's graph without plotting points.
Art of Problem Solving
Art of Problem Solving wiki reference on polynomials as used in competition mathematics: degree, coefficients, roots and the Fundamental Theorem of Algebra, with links to related results such as Vieta's formulas and to contest problems for practice.
Algebra 1
Complete school Algebra 1 course of video lessons and graded practice covering linear equations and inequalities, graphing, functions, systems of equations, exponents, polynomials and quadratics. Learners finish able to solve and graph linear and quadratic problems and read function notation.
mathsisfun.com
MathIsFun.com is a beginner-friendly math site that explains concepts with clear, step-by-step lessons and interactive activities. It covers topics from algebra and linear equations to geometry, fractions, data, and more, with practice problems, worksheets, and quizzes.
Algebra: Elementary to Advanced - Polynomials and Roots
Third course in Johns Hopkins's algebra sequence, covering exponential functions, polynomial arithmetic and factoring, square and nth roots, and percent and interest applications. Finishes with a cumulative exam, preparing you for precalculus, statistics or data science coursework.