Question

if a + b = 5 and ab = 16, find a^2+ b^2​

Answer 1

Given : a + b = 5............(1)

and ab = 16 .....................(2)

It is known that,

(a + b)² = a² + 2ab + b² 

Now, substituting the values of (1) and (2) in the above, we get.

⇒ (5)² = a² + 2*(16) + b²

⇒ 25= a² + 32 + b²

⇒ a² + b² = 25 - 32

⇒ a² + b² = -7

please mark me as a brianliest.

Answer 2

Answer:

this is your answer ✔️ ✔️