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Algebra 2

Free Algebra 2 study guide: 9 units with summaries, key ideas, flashcards and 285 practice questions with step-by-step solutions.

Lines up with: SAT: Advanced Math; ACT Math; state end-of-course exams.

Units

1. UNIT 01

   Functions & transformations

   Algebra 2 treats functions as objects you can shift, stretch, combine and invert.
2. UNIT 02

   Quadratics & complex numbers

   This unit finishes quadratics and introduces complex numbers, which let every quadratic have solutions.
3. UNIT 03

   Polynomial functions

   Polynomials of higher degree have predictable shapes. Their zeros, multiplicities and leading term tell you how the graph looks.
4. UNIT 04

   Rational expressions & equations

   Rational expressions are fractions of polynomials. Work with them like numerical fractions, and watch for values that make a denominator zero.
5. UNIT 05

   Radicals & rational exponents

   Radicals and rational exponents are two ways to write roots. Converting between them makes simplifying easier.
6. UNIT 06

   Exponential & logarithmic functions

   Exponential functions model percent growth; logarithms answer "what exponent?" Together they solve problems like doubling time.
7. UNIT 07

   Sequences & series

   Sequences are ordered lists; series are their sums. Arithmetic ones add a constant, geometric ones multiply by one.
8. UNIT 08

   Trigonometric functions

   Algebra 2 extends trig from right triangles to any angle using the unit circle, and introduces sine and cosine as periodic functions.
9. UNIT 09

   Probability & statistics

   This unit covers counting outcomes, computing probabilities and using the normal distribution.