Question

p-q=4,p²+q²=22.find pq​

Answer 1

Answer:

given that

p-q=4,p^2+q^2=22

p=√22+q^2...(1)

p-q=4

√22+q^2-q=4

√22+√q^2=4

√2*11+q=4

2*11+q=√4

2*11+q=2

q=2-22

q=-20.....(2)

p-q=4

p-22=4

p=4+22

p=26

then pq is

26*-20=-520