Question

if p2+q2=7 and p+q=4 then what is the value of p and q [please explain the answer ]

Answer 1

Answer:

i hope this is help you

Step-by-step explanation:

p + q = 4

and p

2

+ q

2

= 7

(p + q)

2

= (4)

2

= 16

⇒ p

2

+ q

2

+ 2pq = 16

⇒ 7 + 2pq = 16

⇒ 2pq = 9

pq =

2

9

Answer 2

Answer:

pq = 9/2

Step-by-step explanation:

Given

p + q = 4

squaring both side

(p + q)^2 = 16

p^2 + q^2 + 2pq = 16

7 + 2pq = 16

2pq = 16 - 7

2pq = 9

pq = 9/2