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9^2+r^2=(3+r^2)
We move all terms to the left:
9^2+r^2-((3+r^2))=0
We add all the numbers together, and all the variables
r^2-((3+r^2))+81=0
We calculate terms in parentheses: -((3+r^2)), so:We get rid of parentheses
(3+r^2)
We get rid of parentheses
r^2+3
Back to the equation:
-(r^2+3)
r^2-r^2-3+81=0
We add all the numbers together, and all the variables
78!=0
There is no solution for this equation
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