Question 150414
The quantity (p-q) is a factor of?
1) {{{p^2-q^2 = highlight((p-q))(p+q)}}} 
2) {{{p^2+q^2}}} Prime!
3) {{{p^3-q^3 = highlight((p-q))(p^2+pq+p^2)}}}
4) {{{p^3+q^3 = (p+q)(p^2-pq+q^2)}}}
Answer C is appropriate!