8n^2-57n+2=0

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Solution for 8n^2-57n+2=0 equation:


Simplifying
8n2 + -57n + 2 = 0

Reorder the terms:
2 + -57n + 8n2 = 0

Solving
2 + -57n + 8n2 = 0

Solving for variable 'n'.

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

Divide each side by '8'.
0.25 + -7.125n + n2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -7.125n + -0.25 + n2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + -7.125n + n2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -7.125n + n2 = 0 + -0.25
-7.125n + n2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-7.125n + n2 = -0.25

The n term is -7.125n.  Take half its coefficient (-3.5625).
Square it (12.69140625) and add it to both sides.

Add '12.69140625' to each side of the equation.
-7.125n + 12.69140625 + n2 = -0.25 + 12.69140625

Reorder the terms:
12.69140625 + -7.125n + n2 = -0.25 + 12.69140625

Combine like terms: -0.25 + 12.69140625 = 12.44140625
12.69140625 + -7.125n + n2 = 12.44140625

Factor a perfect square on the left side:
(n + -3.5625)(n + -3.5625) = 12.44140625

Calculate the square root of the right side: 3.527237765

Break this problem into two subproblems by setting 
(n + -3.5625) equal to 3.527237765 and -3.527237765.

Subproblem 1

n + -3.5625 = 3.527237765 Simplifying n + -3.5625 = 3.527237765 Reorder the terms: -3.5625 + n = 3.527237765 Solving -3.5625 + n = 3.527237765 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3.5625' to each side of the equation. -3.5625 + 3.5625 + n = 3.527237765 + 3.5625 Combine like terms: -3.5625 + 3.5625 = 0.0000 0.0000 + n = 3.527237765 + 3.5625 n = 3.527237765 + 3.5625 Combine like terms: 3.527237765 + 3.5625 = 7.089737765 n = 7.089737765 Simplifying n = 7.089737765

Subproblem 2

n + -3.5625 = -3.527237765 Simplifying n + -3.5625 = -3.527237765 Reorder the terms: -3.5625 + n = -3.527237765 Solving -3.5625 + n = -3.527237765 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3.5625' to each side of the equation. -3.5625 + 3.5625 + n = -3.527237765 + 3.5625 Combine like terms: -3.5625 + 3.5625 = 0.0000 0.0000 + n = -3.527237765 + 3.5625 n = -3.527237765 + 3.5625 Combine like terms: -3.527237765 + 3.5625 = 0.035262235 n = 0.035262235 Simplifying n = 0.035262235

Solution

The solution to the problem is based on the solutions from the subproblems. n = {7.089737765, 0.035262235}

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