-0.0625x^2+2x+5=0

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Solution for -0.0625x^2+2x+5=0 equation:


Simplifying
-0.0625x2 + 2x + 5 = 0

Reorder the terms:
5 + 2x + -0.0625x2 = 0

Solving
5 + 2x + -0.0625x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.0625 the coefficient of the squared term: 

Divide each side by '-0.0625'.
-80 + -32x + x2 = 0

Move the constant term to the right:

Add '80' to each side of the equation.
-80 + -32x + 80 + x2 = 0 + 80

Reorder the terms:
-80 + 80 + -32x + x2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + -32x + x2 = 0 + 80
-32x + x2 = 0 + 80

Combine like terms: 0 + 80 = 80
-32x + x2 = 80

The x term is -32x.  Take half its coefficient (-16).
Square it (256) and add it to both sides.

Add '256' to each side of the equation.
-32x + 256 + x2 = 80 + 256

Reorder the terms:
256 + -32x + x2 = 80 + 256

Combine like terms: 80 + 256 = 336
256 + -32x + x2 = 336

Factor a perfect square on the left side:
(x + -16)(x + -16) = 336

Calculate the square root of the right side: 18.33030278

Break this problem into two subproblems by setting 
(x + -16) equal to 18.33030278 and -18.33030278.

Subproblem 1

x + -16 = 18.33030278 Simplifying x + -16 = 18.33030278 Reorder the terms: -16 + x = 18.33030278 Solving -16 + x = 18.33030278 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x = 18.33030278 + 16 Combine like terms: -16 + 16 = 0 0 + x = 18.33030278 + 16 x = 18.33030278 + 16 Combine like terms: 18.33030278 + 16 = 34.33030278 x = 34.33030278 Simplifying x = 34.33030278

Subproblem 2

x + -16 = -18.33030278 Simplifying x + -16 = -18.33030278 Reorder the terms: -16 + x = -18.33030278 Solving -16 + x = -18.33030278 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x = -18.33030278 + 16 Combine like terms: -16 + 16 = 0 0 + x = -18.33030278 + 16 x = -18.33030278 + 16 Combine like terms: -18.33030278 + 16 = -2.33030278 x = -2.33030278 Simplifying x = -2.33030278

Solution

The solution to the problem is based on the solutions from the subproblems. x = {34.33030278, -2.33030278}

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