(r+1)^2=r^2+9

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Solution for (r+1)^2=r^2+9 equation: 



(r+1)^2=r^2+9

We move all terms to the left:

(r+1)^2-(r^2+9)=0

We get rid of parentheses

-r^2+(r+1)^2-9=0

We add all the numbers together, and all the variables

-1r^2+(r+1)^2-9=0

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

-1r^2+(r+1)^2=9

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