Question 651365
problem:(a+5)^3

Solution:
(a+5)^3

 first you have to do is too cube the first term which is (a) then square the first term multiply it by the second term then multiply it by 3(15a^2). then square the second term multiply it by the first term and multiply it by 3 (75a) after that cube the last second term (125)

a^3+15a^2+75a+125( this is the answer) 

i hope this help u!!