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(8+4n)2=0
We simplify the equation to the form, which is simple to understand
(8+4n)2=0
Reorder the terms in parentheses
(+16+8n)=0
Remove unnecessary parentheses
+16+8n=0
We move all terms containing n to the left and all other terms to the right.
+8n=0-16
We simplify left and right side of the equation.
+8n=-16
We divide both sides of the equation by 8 to get n.
n=-2
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