Question

If p – q = 7 and pq = 18 , find the value of p² + q².​

Answer 1

Answer:

85

Step-by-step explanation:

Given , p - q = 7

pq = 18

Now , p^2+q^2

(p-q)^2=p^2+q^2-2pq

(7)^2=p^2+q^2-2(18)

49=p^2+q^2-36

49+36=p^2+q^2

85=p^2+q^2