Question

6. If pq=21 and p+q=10 then the value of p’+qis:
a) 100
b) 142
c) 42
d) 58
3.21
2.2

plz reply fast​

Answer 1

Answer:

c) 42

Step-by-step explanation:

pq=21& p+q=10

then,

p=7 or 3 ,

q=3 or 7

then,

p' = p×2

p'=14

p'+q=42