(2+k)^2+(2-k)^2=5^2

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Solution for (2+k)^2+(2-k)^2=5^2 equation: 



(2+k)^2+(2-k)^2=5^2

We move all terms to the left:

(2+k)^2+(2-k)^2-(5^2)=0

We add all the numbers together, and all the variables

(k+2)^2+(-1k+2)^2-5^2=0

We add all the numbers together, and all the variables

(k+2)^2+(-1k+2)^2-25=0

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

(k+2)^2+(-1k+2)^2=25

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