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(n+7)2=0
We simplify the equation to the form, which is simple to understand
(n+7)2=0
Reorder the terms in parentheses
(+2n+14)=0
Remove unnecessary parentheses
+2n+14=0
We move all terms containing n to the left and all other terms to the right.
+2n=0-14
We simplify left and right side of the equation.
+2n=-14
We divide both sides of the equation by 2 to get n.
n=-7
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