16x^2+x=316

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Solution for 16x^2+x=316 equation:


Simplifying
16x2 + x = 316

Reorder the terms:
x + 16x2 = 316

Solving
x + 16x2 = 316

Solving for variable 'x'.

Reorder the terms:
-316 + x + 16x2 = 316 + -316

Combine like terms: 316 + -316 = 0
-316 + x + 16x2 = 0

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

Divide each side by '16'.
-19.75 + 0.0625x + x2 = 0

Move the constant term to the right:

Add '19.75' to each side of the equation.
-19.75 + 0.0625x + 19.75 + x2 = 0 + 19.75

Reorder the terms:
-19.75 + 19.75 + 0.0625x + x2 = 0 + 19.75

Combine like terms: -19.75 + 19.75 = 0.00
0.00 + 0.0625x + x2 = 0 + 19.75
0.0625x + x2 = 0 + 19.75

Combine like terms: 0 + 19.75 = 19.75
0.0625x + x2 = 19.75

The x term is x.  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.
0.0625x + 0.25 + x2 = 19.75 + 0.25

Reorder the terms:
0.25 + 0.0625x + x2 = 19.75 + 0.25

Combine like terms: 19.75 + 0.25 = 20
0.25 + 0.0625x + x2 = 20

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4.472135955 and -4.472135955.

Subproblem 1

x + 0.5 = 4.472135955 Simplifying x + 0.5 = 4.472135955 Reorder the terms: 0.5 + x = 4.472135955 Solving 0.5 + x = 4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4.472135955 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.472135955 + -0.5 x = 4.472135955 + -0.5 Combine like terms: 4.472135955 + -0.5 = 3.972135955 x = 3.972135955 Simplifying x = 3.972135955

Subproblem 2

x + 0.5 = -4.472135955 Simplifying x + 0.5 = -4.472135955 Reorder the terms: 0.5 + x = -4.472135955 Solving 0.5 + x = -4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4.472135955 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.472135955 + -0.5 x = -4.472135955 + -0.5 Combine like terms: -4.472135955 + -0.5 = -4.972135955 x = -4.972135955 Simplifying x = -4.972135955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.972135955, -4.972135955}

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