Question

d
(vi) If p + q = V13 and p - q = √15
then the value of pq is - [ME-2019
(a) 2
(b) 18
(c) 9
(d) 8
The​

Answer 1

Answer:

a) 2

Step-by-step explanation:

Given that

p + q = √13

Squaring both sides, we get

( p + q )2 = 13

( p – q )2 + 4 pq = 13

( √ 5 )2 + 4pq = 13

5 + 4pq = 13

4pq = 13 – 5

4pq = 8

pq = 8/4

pq = 2

The required answer is ( a ) 2