(n-5)2-30=70

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Solution for (n-5)2-30=70 equation: 



(n-5)2-30=70

We move all terms to the left:

(n-5)2-30-(70)=0

We add all the numbers together, and all the variables

(n-5)2-100=0

We multiply parentheses

2n-10-100=0

We add all the numbers together, and all the variables

2n-110=0

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

2n=110

n=110/2

n=55

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