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Simplifying
81n2 + -8 = 28
Reorder the terms:
-8 + 81n2 = 28
Solving
-8 + 81n2 = 28
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 + 81n2 = 28 + 8
Combine like terms: -8 + 8 = 0
0 + 81n2 = 28 + 8
81n2 = 28 + 8
Combine like terms: 28 + 8 = 36
81n2 = 36
Divide each side by '81'.
n2 = 0.4444444444
Simplifying
n2 = 0.4444444444
Take the square root of each side:
n = {-0.666666667, 0.666666667}
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