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Simplifying
3n2 + -5 = 40
Reorder the terms:
-5 + 3n2 = 40
Solving
-5 + 3n2 = 40
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 3n2 = 40 + 5
Combine like terms: -5 + 5 = 0
0 + 3n2 = 40 + 5
3n2 = 40 + 5
Combine like terms: 40 + 5 = 45
3n2 = 45
Divide each side by '3'.
n2 = 15
Simplifying
n2 = 15
Take the square root of each side:
n = {-3.872983346, 3.872983346}
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