A(n)=22+(n-1)2

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Solution for A(n)=22+(n-1)2 equation: 



(A)=22+(A-1)2

We move all terms to the left:

(A)-(22+(A-1)2)=0



We calculate terms in parentheses: -(22+(A-1)2), so:

22+(A-1)2

determiningTheFunctionDomain
(A-1)2+22

We multiply parentheses

2A-2+22

We add all the numbers together, and all the variables

2A+20

Back to the equation:

-(2A+20)



We get rid of parentheses

A-2A-20=0

We add all the numbers together, and all the variables

-1A-20=0

We move all terms containing A to the left, all other terms to the right

-A=20

A=20/-1

A=-20

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