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Simplifying
2n2 + -4 = 124
Reorder the terms:
-4 + 2n2 = 124
Solving
-4 + 2n2 = 124
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 2n2 = 124 + 4
Combine like terms: -4 + 4 = 0
0 + 2n2 = 124 + 4
2n2 = 124 + 4
Combine like terms: 124 + 4 = 128
2n2 = 128
Divide each side by '2'.
n2 = 64
Simplifying
n2 = 64
Take the square root of each side:
n = {-8, 8}
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