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145^2=81(81+x)
We move all terms to the left:
145^2-(81(81+x))=0
We add all the numbers together, and all the variables
-(81(x+81))+145^2=0
We add all the numbers together, and all the variables
-(81(x+81))+21025=0
We calculate terms in parentheses: -(81(x+81)), so:We get rid of parentheses
81(x+81)
We multiply parentheses
81x+6561
Back to the equation:
-(81x+6561)
-81x-6561+21025=0
We add all the numbers together, and all the variables
-81x+14464=0
We move all terms containing x to the left, all other terms to the right
-81x=-14464
x=-14464/-81
x=178+46/81
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