x^2+0.13x-0.051=0

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Solution for x^2+0.13x-0.051=0 equation:


Simplifying
x2 + 0.13x + -0.051 = 0

Reorder the terms:
-0.051 + 0.13x + x2 = 0

Solving
-0.051 + 0.13x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.051' to each side of the equation.
-0.051 + 0.13x + 0.051 + x2 = 0 + 0.051

Reorder the terms:
-0.051 + 0.051 + 0.13x + x2 = 0 + 0.051

Combine like terms: -0.051 + 0.051 = 0.000
0.000 + 0.13x + x2 = 0 + 0.051
0.13x + x2 = 0 + 0.051

Combine like terms: 0 + 0.051 = 0.051
0.13x + x2 = 0.051

The x term is 0.13x.  Take half its coefficient (0.065).
Square it (0.004225) and add it to both sides.

Add '0.004225' to each side of the equation.
0.13x + 0.004225 + x2 = 0.051 + 0.004225

Reorder the terms:
0.004225 + 0.13x + x2 = 0.051 + 0.004225

Combine like terms: 0.051 + 0.004225 = 0.055225
0.004225 + 0.13x + x2 = 0.055225

Factor a perfect square on the left side:
(x + 0.065)(x + 0.065) = 0.055225

Calculate the square root of the right side: 0.235

Break this problem into two subproblems by setting 
(x + 0.065) equal to 0.235 and -0.235.

Subproblem 1

x + 0.065 = 0.235 Simplifying x + 0.065 = 0.235 Reorder the terms: 0.065 + x = 0.235 Solving 0.065 + x = 0.235 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.065' to each side of the equation. 0.065 + -0.065 + x = 0.235 + -0.065 Combine like terms: 0.065 + -0.065 = 0.000 0.000 + x = 0.235 + -0.065 x = 0.235 + -0.065 Combine like terms: 0.235 + -0.065 = 0.17 x = 0.17 Simplifying x = 0.17

Subproblem 2

x + 0.065 = -0.235 Simplifying x + 0.065 = -0.235 Reorder the terms: 0.065 + x = -0.235 Solving 0.065 + x = -0.235 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.065' to each side of the equation. 0.065 + -0.065 + x = -0.235 + -0.065 Combine like terms: 0.065 + -0.065 = 0.000 0.000 + x = -0.235 + -0.065 x = -0.235 + -0.065 Combine like terms: -0.235 + -0.065 = -0.3 x = -0.3 Simplifying x = -0.3

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.17, -0.3}

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