Question

If pq = 6 and p+q= 5 then find p2 + q2?​

Answer 1

Answer:

13

Step-by-step explanation:

We have

p+q=5

Squaring both sides

(p+q)^2=5^2

p^2+q^2+2pq=25--------(i)

but pq=6,putting value of pq in (i) we get,

p^2+q^2+2(6)=25

p^2+q^2=25-12

p^2+q^2=13