-A^2+22a=21

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Solution for -A^2+22a=21 equation: 



-^2+22A=21

We move all terms to the left:

-^2+22A-(21)=0

determiningTheFunctionDomain
22A-21-^2=0

We add all the numbers together, and all the variables

22A=0

A=0/22

A=0

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