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13-09-2019
Mathematics

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help pls? see attachment

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Аноним Аноним

13-09-2019

Answer:

31.

Step-by-step 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.

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