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Simplifying
8n2 + -8 = 280
Reorder the terms:
-8 + 8n2 = 280
Solving
-8 + 8n2 = 280
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + 8n2 = 280 + 8
Combine like terms: -8 + 8 = 0
0 + 8n2 = 280 + 8
8n2 = 280 + 8
Combine like terms: 280 + 8 = 288
8n2 = 288
Divide each side by '8'.
n2 = 36
Simplifying
n2 = 36
Take the square root of each side:
n = {-6, 6}
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