x^2+(x+3)^2=12^2

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Solution for x^2+(x+3)^2=12^2 equation: 



x^2+(x+3)^2=12^2

We move all terms to the left:

x^2+(x+3)^2-(12^2)=0

We add all the numbers together, and all the variables

x^2+(x+3)^2-144=0

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

x^2+(x+3)^2=144

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