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

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Solution for (7+x)^2=3^2+x^2 equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(3^2+x^2)+(x+7)^2=0

We get rid of parentheses

-x^2+(x+7)^2-3^2=0

We add all the numbers together, and all the variables

-1x^2+(x+7)^2-9=0

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

-1x^2+(x+7)^2=9

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