• Associative property: (a+b)+c = a+(b+c)
• Commutative property: ab = ba
• Transitive property: if a=b and b=c then a=c
• Distributive property: (a-c)b = ab-ac

This can also be used with binomial multiplication: (a-b)(c-d) = ab-ac-bc+bd

• PEMDAS

1. All grouping symbols ([{||}])
2. Exponents
3. Multiplication/Division
4. Addition/Subtraction

• Understood 1: x = 1x^1/1