Question

if p+q=5 and pq=6 what will be the value of p square + q square​

Answer 1

Answer:

(p+q)²=p²+q²+2pq

or; 5² = p²+q² + 2*6

or; p² + q² = 25 - 12

or; p² + q² = 13. (Ans.)

Step-by-step explanation:

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Answer 2

Answer:

use identities

Step-by-step explanation:

[p+q]^2 = p^2 + q^2 + 2 [p*q]

[5]^2= p^2 +q^2 + 2*6

25= p^2 +q^2 + 12

25-12=  p^2 +q^2

p^2 +q^2 =13