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)

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