Become familiar with these useful expressions

The 3 laws - Cummutative Laws, Associative Laws, and Distributive Law - are invaluable tools.

Expanding the following expressions makes use of these 3 Laws -

(a + b)² = a²  2ab + b²
(a - b)² = a² - 2ab + b²
(a + b)³ = a³ - 3a²b +3ab² - b³
(a - b)³ = a³ - 3a²b + 3ab² - b³
(a + b)(a - b) = a² - b²
(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca

These expansions are so useful and needed so frequently, commit them to memory! Contact us!