What is the second term of (p+q)^5

Answer 1

The binomial expansion of (p+q)^5 is:

(p+q)^5 = 1*p^5 + 5*p^4*q + 10*p^3*q^2 + 10*p^2*q^3 + 5*p*q^4 + 1*q^5

The second term in this expansion is 5*p^4*q.