4n=4n^2+8n-5

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Solution for 4n=4n^2+8n-5 equation:


Simplifying
4n = 4n2 + 8n + -5

Reorder the terms:
4n = -5 + 8n + 4n2

Solving
4n = -5 + 8n + 4n2

Solving for variable 'n'.

Reorder the terms:
5 + 4n + -8n + -4n2 = -5 + 8n + 4n2 + 5 + -8n + -4n2

Combine like terms: 4n + -8n = -4n
5 + -4n + -4n2 = -5 + 8n + 4n2 + 5 + -8n + -4n2

Reorder the terms:
5 + -4n + -4n2 = -5 + 5 + 8n + -8n + 4n2 + -4n2

Combine like terms: -5 + 5 = 0
5 + -4n + -4n2 = 0 + 8n + -8n + 4n2 + -4n2
5 + -4n + -4n2 = 8n + -8n + 4n2 + -4n2

Combine like terms: 8n + -8n = 0
5 + -4n + -4n2 = 0 + 4n2 + -4n2
5 + -4n + -4n2 = 4n2 + -4n2

Combine like terms: 4n2 + -4n2 = 0
5 + -4n + -4n2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.25 + n + n2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + n + 1.25 + n2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + n + n2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + n + n2 = 0 + 1.25
n + n2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
n + n2 = 1.25

The n term is n.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + n2 = 1.25 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + n2 = 1.25 + 0.25

Combine like terms: 1.25 + 0.25 = 1.5
1.25 + n2 = 1.5

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = 1.5

Calculate the square root of the right side: 1.224744871

Break this problem into two subproblems by setting 
(n + 0.5) equal to 1.224744871 and -1.224744871.

Subproblem 1

n + 0.5 = 1.224744871 Simplifying n + 0.5 = 1.224744871 Reorder the terms: 0.5 + n = 1.224744871 Solving 0.5 + n = 1.224744871 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = 1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = 1.224744871 + -0.5 n = 1.224744871 + -0.5 Combine like terms: 1.224744871 + -0.5 = 0.724744871 n = 0.724744871 Simplifying n = 0.724744871

Subproblem 2

n + 0.5 = -1.224744871 Simplifying n + 0.5 = -1.224744871 Reorder the terms: 0.5 + n = -1.224744871 Solving 0.5 + n = -1.224744871 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = -1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = -1.224744871 + -0.5 n = -1.224744871 + -0.5 Combine like terms: -1.224744871 + -0.5 = -1.724744871 n = -1.724744871 Simplifying n = -1.724744871

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.724744871, -1.724744871}

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