Question

If pq = 3 & P + q = 6 , then find value of p^2 + q^2​

Answer 1

Step-by-step explanation:

6^2+6^2

36+36

72

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Answer 2

Answer:

30

Step-by-step explanation:

Since,

α²+β²= (α+β)²-2αβ

Here ,

The Formula is very basic,

(p²+q²)= (p+q)²-2pq

=> = (6)²-2(3)

= 36-6

=> 30

=> 30 is the answer of question :-

Some proves why a²+b²= (a+b)²-2ab

=> (a+b)²= a²+b²+2ab

=> transposing,

=> (a+b)²-2ab = a²+b²

This is how we found that

and since, pq and p+q is given we put the value and find the answer.