# Elementary algebra
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1. Variables and constants
- Variables
- Constants
- Coefficients
2. Algebraic laws
- properties of addition
- properties of multiplication
- properties of division
- properties of subtraction
- FOIL method
- power laws
3. Algebraic equations
- algebraic equation
- substitution into a variable
- solving for a variable
- difference of two squares
- (x+y)^2=x^2+2xy+y^2
- other algebraic identities
3. Algebraic inequalities
4. Solving algebraic equations
4. Simultaneous algebraic equations
- substitution
- elimination
5. Polynomial equations
- linear equation
- linear formula
- quadratic equation
- factorization method for quadratic equations 
- completing the square
- Vieta's formulae for quadratic equations
- Vieta's formulae
- quadratic equation
- discriminant
- discriminant of degree 2
- quadratic formula
5. Complex numbers
- cubic equation
- discriminant of degree 3
6. Advanced
- Binomial theorem