Algebra
Intermediate

Cube of a Binomial

Expansion of a binomial raised to the third power.

Formula

(a+b)3=a3+3a2b+3ab2+b3(a+b)^3 = a^3 + 3a^2b + 3ab^2 + b^3

Variables

a,bTerms

Example

(x+1)³ = x³+3x²+3x+1

Did You Know?

Expanding (a+b)³ gives coefficients 1, 3, 3, 1 — the fourth row of Pascal's triangle.