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Simplifying
7n2 + 4 = 438
Reorder the terms:
4 + 7n2 = 438
Solving
4 + 7n2 = 438
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 + 7n2 = 438 + -4
Combine like terms: 4 + -4 = 0
0 + 7n2 = 438 + -4
7n2 = 438 + -4
Combine like terms: 438 + -4 = 434
7n2 = 434
Divide each side by '7'.
n2 = 62
Simplifying
n2 = 62
Take the square root of each side:
n = {-7.874007874, 7.874007874}
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