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Simplifying
3n2 + 0.75 = 90
Reorder the terms:
0.75 + 3n2 = 90
Solving
0.75 + 3n2 = 90
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '-0.75' to each side of the equation.
0.75 + -0.75 + 3n2 = 90 + -0.75
Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 3n2 = 90 + -0.75
3n2 = 90 + -0.75
Combine like terms: 90 + -0.75 = 89.25
3n2 = 89.25
Divide each side by '3'.
n2 = 29.75
Simplifying
n2 = 29.75
Take the square root of each side:
n = {-5.454356057, 5.454356057}
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