Respuesta :

A^2 + a + a + 1
So they answer is
A^2 + 2a + 1
I think, I hope this helps :)

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(a + 1)(a + 1)

= a^2 + a + a + 1

= a^2 + 2a +1

Hope This Helps You!

Good Luck (:

Have A Great Day ^-^

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