For this case we have the following equation:

Rewriting we have:

Dividing by 2 to both sides of the equation:

We apply the quadratic formula:

We have to:

Substituting:

Thus, we have two roots:

ANswer:

Answer:
n(A)= 10
Step-by-step explanation:
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Answer:
Irrational
Step-by-step explanation:
I hoped this helped, I don't know if it's right