x^2+0.43x-4.0764=0

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Solution for x^2+0.43x-4.0764=0 equation:


Simplifying
x2 + 0.43x + -4.0764 = 0

Reorder the terms:
-4.0764 + 0.43x + x2 = 0

Solving
-4.0764 + 0.43x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4.0764' to each side of the equation.
-4.0764 + 0.43x + 4.0764 + x2 = 0 + 4.0764

Reorder the terms:
-4.0764 + 4.0764 + 0.43x + x2 = 0 + 4.0764

Combine like terms: -4.0764 + 4.0764 = 0.0000
0.0000 + 0.43x + x2 = 0 + 4.0764
0.43x + x2 = 0 + 4.0764

Combine like terms: 0 + 4.0764 = 4.0764
0.43x + x2 = 4.0764

The x term is 0.43x.  Take half its coefficient (0.215).
Square it (0.046225) and add it to both sides.

Add '0.046225' to each side of the equation.
0.43x + 0.046225 + x2 = 4.0764 + 0.046225

Reorder the terms:
0.046225 + 0.43x + x2 = 4.0764 + 0.046225

Combine like terms: 4.0764 + 0.046225 = 4.122625
0.046225 + 0.43x + x2 = 4.122625

Factor a perfect square on the left side:
(x + 0.215)(x + 0.215) = 4.122625

Calculate the square root of the right side: 2.030424832

Break this problem into two subproblems by setting 
(x + 0.215) equal to 2.030424832 and -2.030424832.

Subproblem 1

x + 0.215 = 2.030424832 Simplifying x + 0.215 = 2.030424832 Reorder the terms: 0.215 + x = 2.030424832 Solving 0.215 + x = 2.030424832 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.215' to each side of the equation. 0.215 + -0.215 + x = 2.030424832 + -0.215 Combine like terms: 0.215 + -0.215 = 0.000 0.000 + x = 2.030424832 + -0.215 x = 2.030424832 + -0.215 Combine like terms: 2.030424832 + -0.215 = 1.815424832 x = 1.815424832 Simplifying x = 1.815424832

Subproblem 2

x + 0.215 = -2.030424832 Simplifying x + 0.215 = -2.030424832 Reorder the terms: 0.215 + x = -2.030424832 Solving 0.215 + x = -2.030424832 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.215' to each side of the equation. 0.215 + -0.215 + x = -2.030424832 + -0.215 Combine like terms: 0.215 + -0.215 = 0.000 0.000 + x = -2.030424832 + -0.215 x = -2.030424832 + -0.215 Combine like terms: -2.030424832 + -0.215 = -2.245424832 x = -2.245424832 Simplifying x = -2.245424832

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.815424832, -2.245424832}

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