17 lessons spanning Algebra I and Algebra II — from linear equations to matrices and partial fractions — each with theory, worked examples, practice questions, and a downloadable worksheet.
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A linear equation states that two expressions are equal, with variables app...
A linear inequality compares two expressions using less than, greater than,...
Every linear equation corresponds to a straight line on a graph — and under...
A function is a rule that assigns exactly one output to every input — one o...
A system of equations is a set of two or more equations sharing the same va...
A polynomial is an expression built from variables raised to whole-number p...
Factoring reverses multiplication — breaking a polynomial back down into th...
A quadratic equation involves a variable raised to the second power — its g...
The quadratic formula solves ANY quadratic equation, even ones that can't b...
Complex numbers extend the number system to include the square roots of neg...
An exponential function has its variable in the exponent rather than the ba...
A logarithm answers the question 'what exponent gives me this number?' — th...
A sequence is an ordered list of numbers following a pattern — the two most...
A series is what you get when you add up the terms of a sequence — turning ...
A matrix is a rectangular grid of numbers — a compact way to organize and m...
The determinant is a single number calculated from a square matrix that rev...
Partial fraction decomposition breaks a complicated rational expression bac...
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