Question

Help pls? see attachment ​

Answer 1

31.

Explanation:

We use the identity:

a^2 + b^2 = (a + b)^2 - 2ab

So when a + b = 5 and ab = -3:

a^2 + b^2 = 5^2 - 2(-3)

= 25 + 6

= 31.