(N-20)^2=n

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Solution for (N-20)^2=n equation:



(-20)^2=N
We move all terms to the left:
(-20)^2-(N)=0
We add all the numbers together, and all the variables
-1N+400=0
We move all terms containing N to the left, all other terms to the right
-N=-400
N=-400/-1
N=+400

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