4x^2+6.92820323*x=-3

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Solution for 4x^2+6.92820323*x=-3 equation:


Simplifying
4x2 + 6.92820323x = -3

Reorder the terms:
6.92820323x + 4x2 = -3

Solving
6.92820323x + 4x2 = -3

Solving for variable 'x'.

Reorder the terms:
3 + 6.92820323x + 4x2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 6.92820323x + 4x2 = 0

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

Divide each side by '4'.
0.75 + 1.732050808x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 1.732050808x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 1.732050808x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 1.732050808x + x2 = 0 + -0.75
1.732050808x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
1.732050808x + x2 = -0.75

The x term is 1.732050808x.  Take half its coefficient (0.866025404).
Square it (0.7500000004) and add it to both sides.

Add '0.7500000004' to each side of the equation.
1.732050808x + 0.7500000004 + x2 = -0.75 + 0.7500000004

Reorder the terms:
0.7500000004 + 1.732050808x + x2 = -0.75 + 0.7500000004

Combine like terms: -0.75 + 0.7500000004 = 0.0000000004
0.7500000004 + 1.732050808x + x2 = 0.0000000004

Factor a perfect square on the left side:
(x + 0.866025404)(x + 0.866025404) = 0.0000000004

Calculate the square root of the right side: 0.00002

Break this problem into two subproblems by setting 
(x + 0.866025404) equal to 0.00002 and -0.00002.

Subproblem 1

x + 0.866025404 = 0.00002 Simplifying x + 0.866025404 = 0.00002 Reorder the terms: 0.866025404 + x = 0.00002 Solving 0.866025404 + x = 0.00002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.866025404' to each side of the equation. 0.866025404 + -0.866025404 + x = 0.00002 + -0.866025404 Combine like terms: 0.866025404 + -0.866025404 = 0.000000000 0.000000000 + x = 0.00002 + -0.866025404 x = 0.00002 + -0.866025404 Combine like terms: 0.00002 + -0.866025404 = -0.866005404 x = -0.866005404 Simplifying x = -0.866005404

Subproblem 2

x + 0.866025404 = -0.00002 Simplifying x + 0.866025404 = -0.00002 Reorder the terms: 0.866025404 + x = -0.00002 Solving 0.866025404 + x = -0.00002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.866025404' to each side of the equation. 0.866025404 + -0.866025404 + x = -0.00002 + -0.866025404 Combine like terms: 0.866025404 + -0.866025404 = 0.000000000 0.000000000 + x = -0.00002 + -0.866025404 x = -0.00002 + -0.866025404 Combine like terms: -0.00002 + -0.866025404 = -0.866045404 x = -0.866045404 Simplifying x = -0.866045404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.866005404, -0.866045404}

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