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Simplifying
5n2 + -80 = 0
Reorder the terms:
-80 + 5n2 = 0
Solving
-80 + 5n2 = 0
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '80' to each side of the equation.
-80 + 80 + 5n2 = 0 + 80
Combine like terms: -80 + 80 = 0
0 + 5n2 = 0 + 80
5n2 = 0 + 80
Combine like terms: 0 + 80 = 80
5n2 = 80
Divide each side by '5'.
n2 = 16
Simplifying
n2 = 16
Take the square root of each side:
n = {-4, 4}
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