5n^2-120n+24=0

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Solution for 5n^2-120n+24=0 equation:


Simplifying
5n2 + -120n + 24 = 0

Reorder the terms:
24 + -120n + 5n2 = 0

Solving
24 + -120n + 5n2 = 0

Solving for variable 'n'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
4.8 + -24n + n2 = 0

Move the constant term to the right:

Add '-4.8' to each side of the equation.
4.8 + -24n + -4.8 + n2 = 0 + -4.8

Reorder the terms:
4.8 + -4.8 + -24n + n2 = 0 + -4.8

Combine like terms: 4.8 + -4.8 = 0.0
0.0 + -24n + n2 = 0 + -4.8
-24n + n2 = 0 + -4.8

Combine like terms: 0 + -4.8 = -4.8
-24n + n2 = -4.8

The n term is -24n.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24n + 144 + n2 = -4.8 + 144

Reorder the terms:
144 + -24n + n2 = -4.8 + 144

Combine like terms: -4.8 + 144 = 139.2
144 + -24n + n2 = 139.2

Factor a perfect square on the left side:
(n + -12)(n + -12) = 139.2

Calculate the square root of the right side: 11.798304963

Break this problem into two subproblems by setting 
(n + -12) equal to 11.798304963 and -11.798304963.

Subproblem 1

n + -12 = 11.798304963 Simplifying n + -12 = 11.798304963 Reorder the terms: -12 + n = 11.798304963 Solving -12 + n = 11.798304963 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + n = 11.798304963 + 12 Combine like terms: -12 + 12 = 0 0 + n = 11.798304963 + 12 n = 11.798304963 + 12 Combine like terms: 11.798304963 + 12 = 23.798304963 n = 23.798304963 Simplifying n = 23.798304963

Subproblem 2

n + -12 = -11.798304963 Simplifying n + -12 = -11.798304963 Reorder the terms: -12 + n = -11.798304963 Solving -12 + n = -11.798304963 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + n = -11.798304963 + 12 Combine like terms: -12 + 12 = 0 0 + n = -11.798304963 + 12 n = -11.798304963 + 12 Combine like terms: -11.798304963 + 12 = 0.201695037 n = 0.201695037 Simplifying n = 0.201695037

Solution

The solution to the problem is based on the solutions from the subproblems. n = {23.798304963, 0.201695037}

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