Factoring
Types of Equations
Lines
Slope Intercept Form
![y = mx + b](http://www.mathwarehouse.com/algebra/linear_equation/images/slope-intercept-form/general-formula-of-slope-intercept-form.png)
y = mx + b
Standard Form
ax + by = c
Quadratic Equations
![](http://2.bp.blogspot.com/_YeNFpQ8GgCk/TMVFdA-C9FI/AAAAAAAACns/dqwZHrwBzL0/s400/Slide3a.jpg)
FOIL
![](http://www.mathsisfun.com/algebra/images/foil.gif)
Formulas
Quadratic equations
a^2 + b^2 = (a + b)(a - b)
Cubic equations
a^3 - b^3 = (a - b)(a^2 + ab + b^2)
a^3 + b^3 = (a + b)(a^2 - ab + b^2)
Special factorizations
factor by grouping
an + a + bn + b = a(n + 1) + b(n+1) = (a + b)(n + 1)
Factor using formulas