Question 624874
Binomial theorem


*[tex \LARGE (a+5)^3 = {{3}\choose{0}}a^3 + {{3} \choose {1}}5a^2 + {{3}\choose{2}}5^2a + {{3}\choose{3}}5^3]


*[tex \LARGE = a^3 + 15a^2 + 75a + 125]