16n^2+n-25=0

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Solution for 16n^2+n-25=0 equation:


Simplifying
16n2 + n + -25 = 0

Reorder the terms:
-25 + n + 16n2 = 0

Solving
-25 + n + 16n2 = 0

Solving for variable 'n'.

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

Divide each side by '16'.
-1.5625 + 0.0625n + n2 = 0

Move the constant term to the right:

Add '1.5625' to each side of the equation.
-1.5625 + 0.0625n + 1.5625 + n2 = 0 + 1.5625

Reorder the terms:
-1.5625 + 1.5625 + 0.0625n + n2 = 0 + 1.5625

Combine like terms: -1.5625 + 1.5625 = 0.0000
0.0000 + 0.0625n + n2 = 0 + 1.5625
0.0625n + n2 = 0 + 1.5625

Combine like terms: 0 + 1.5625 = 1.5625
0.0625n + n2 = 1.5625

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.
0.0625n + 0.25 + n2 = 1.5625 + 0.25

Reorder the terms:
0.25 + 0.0625n + n2 = 1.5625 + 0.25

Combine like terms: 1.5625 + 0.25 = 1.8125
0.25 + 0.0625n + n2 = 1.8125

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = 1.8125

Calculate the square root of the right side: 1.346291202

Break this problem into two subproblems by setting 
(n + 0.5) equal to 1.346291202 and -1.346291202.

Subproblem 1

n + 0.5 = 1.346291202 Simplifying n + 0.5 = 1.346291202 Reorder the terms: 0.5 + n = 1.346291202 Solving 0.5 + n = 1.346291202 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 = 1.346291202 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = 1.346291202 + -0.5 n = 1.346291202 + -0.5 Combine like terms: 1.346291202 + -0.5 = 0.846291202 n = 0.846291202 Simplifying n = 0.846291202

Subproblem 2

n + 0.5 = -1.346291202 Simplifying n + 0.5 = -1.346291202 Reorder the terms: 0.5 + n = -1.346291202 Solving 0.5 + n = -1.346291202 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 = -1.346291202 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = -1.346291202 + -0.5 n = -1.346291202 + -0.5 Combine like terms: -1.346291202 + -0.5 = -1.846291202 n = -1.846291202 Simplifying n = -1.846291202

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.846291202, -1.846291202}

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