Mathematics
Menu
The following are algebraix expansion formulae of selected polynomials. Square of summation
(x + y)^{2} = x^{2} + 2xy + y^{2}
Square of difference
(x  y)^{2} = x^{2}  2xy + y^{2} Difference of squares
x^{2}  y^{2} = (x + y) (x  y)
Cube of summation
(x + y)^{3} = x^{3} + 3x^{2}y + 3xy^{2} + y^{3}
Summation of two cubes
x^{3} + y^{3} = (x + y) (x^{2}  xy + y^{2})
Cube of difference
(x  y) 3 = x^{3}  3x^{2}y + 3xy^{2}  y^{3}
Difference of two cubes
x^{3}  y^{3} = (x  y) (x^{2} + xy + y^{2})
