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Factors and Expansion

Factors and expansion rules

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Rules of factors and expansion can be expressed as

(a + b)2 = a2 + 2 ab + b2         (1)

(a - b)2 = a2 - 2ab + b2         (2)

(a + b)3 = a3 + 3a2b + 3ab2 + b3         (3)

(a - b)3 = a3 - 3a2b + 3 ab2 - b3         (4)

(a2 - b2) = (a - b) (a + b)         (5)

(a3 - b3) = (a - b) (a2 + ab + b2)         (6)

(a3 + b3) = (a + b) (a2 - ab + b2)         (7)

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Related Topics

  • Mathematics - Mathematical rules and laws - areas, volumes, exponents, trigometric functions and more

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