Algebra Expansion Formulae, Mathematics

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The following are algebraix expansion formulae of selected polynomials.

Square of summation

(x + y)² = x² + 2xy + y²

Square of difference

(x - y)² = x² - 2xy + y²

Difference of squares

x² - y² = (x + y) (x - y)

Cube of summation

(x + y)³ = x³ + 3x²y + 3xy² + y³

Summation of two cubes

x³ + y³ = (x + y) (x² - xy + y²)

Cube of difference

(x - y) 3 = x³ - 3x²y + 3xy² - y³

Difference of two cubes

x³ - y³ = (x - y) (x² + xy + y²)