x^2+.853x-.087006=0

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Solution for x^2+.853x-.087006=0 equation:


Simplifying
x2 + 0.853x + -0.087006 = 0

Reorder the terms:
-0.087006 + 0.853x + x2 = 0

Solving
-0.087006 + 0.853x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.087006' to each side of the equation.
-0.087006 + 0.853x + 0.087006 + x2 = 0 + 0.087006

Reorder the terms:
-0.087006 + 0.087006 + 0.853x + x2 = 0 + 0.087006

Combine like terms: -0.087006 + 0.087006 = 0.000000
0.000000 + 0.853x + x2 = 0 + 0.087006
0.853x + x2 = 0 + 0.087006

Combine like terms: 0 + 0.087006 = 0.087006
0.853x + x2 = 0.087006

The x term is 0.853x.  Take half its coefficient (0.4265).
Square it (0.18190225) and add it to both sides.

Add '0.18190225' to each side of the equation.
0.853x + 0.18190225 + x2 = 0.087006 + 0.18190225

Reorder the terms:
0.18190225 + 0.853x + x2 = 0.087006 + 0.18190225

Combine like terms: 0.087006 + 0.18190225 = 0.26890825
0.18190225 + 0.853x + x2 = 0.26890825

Factor a perfect square on the left side:
(x + 0.4265)(x + 0.4265) = 0.26890825

Calculate the square root of the right side: 0.518563641

Break this problem into two subproblems by setting 
(x + 0.4265) equal to 0.518563641 and -0.518563641.

Subproblem 1

x + 0.4265 = 0.518563641 Simplifying x + 0.4265 = 0.518563641 Reorder the terms: 0.4265 + x = 0.518563641 Solving 0.4265 + x = 0.518563641 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4265' to each side of the equation. 0.4265 + -0.4265 + x = 0.518563641 + -0.4265 Combine like terms: 0.4265 + -0.4265 = 0.0000 0.0000 + x = 0.518563641 + -0.4265 x = 0.518563641 + -0.4265 Combine like terms: 0.518563641 + -0.4265 = 0.092063641 x = 0.092063641 Simplifying x = 0.092063641

Subproblem 2

x + 0.4265 = -0.518563641 Simplifying x + 0.4265 = -0.518563641 Reorder the terms: 0.4265 + x = -0.518563641 Solving 0.4265 + x = -0.518563641 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4265' to each side of the equation. 0.4265 + -0.4265 + x = -0.518563641 + -0.4265 Combine like terms: 0.4265 + -0.4265 = 0.0000 0.0000 + x = -0.518563641 + -0.4265 x = -0.518563641 + -0.4265 Combine like terms: -0.518563641 + -0.4265 = -0.945063641 x = -0.945063641 Simplifying x = -0.945063641

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.092063641, -0.945063641}

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