Question

If p+q=12 and pq=7. Find the value of p3+q3

Answer 1

Answer:

1476

If p+q=12 and pq=7

(p +q)^3=p^3+q^3+3pq(p+q)

(12)^3=p^3+q^3+3(7)(12)

1728=p^3+q^3+252

1728-252=p^3+q^3

1476=p^3+q^3