x^2-4.36x+3.15=0

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Solution for x^2-4.36x+3.15=0 equation:


Simplifying
x2 + -4.36x + 3.15 = 0

Reorder the terms:
3.15 + -4.36x + x2 = 0

Solving
3.15 + -4.36x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-3.15' to each side of the equation.
3.15 + -4.36x + -3.15 + x2 = 0 + -3.15

Reorder the terms:
3.15 + -3.15 + -4.36x + x2 = 0 + -3.15

Combine like terms: 3.15 + -3.15 = 0.00
0.00 + -4.36x + x2 = 0 + -3.15
-4.36x + x2 = 0 + -3.15

Combine like terms: 0 + -3.15 = -3.15
-4.36x + x2 = -3.15

The x term is -4.36x.  Take half its coefficient (-2.18).
Square it (4.7524) and add it to both sides.

Add '4.7524' to each side of the equation.
-4.36x + 4.7524 + x2 = -3.15 + 4.7524

Reorder the terms:
4.7524 + -4.36x + x2 = -3.15 + 4.7524

Combine like terms: -3.15 + 4.7524 = 1.6024
4.7524 + -4.36x + x2 = 1.6024

Factor a perfect square on the left side:
(x + -2.18)(x + -2.18) = 1.6024

Calculate the square root of the right side: 1.265859392

Break this problem into two subproblems by setting 
(x + -2.18) equal to 1.265859392 and -1.265859392.

Subproblem 1

x + -2.18 = 1.265859392 Simplifying x + -2.18 = 1.265859392 Reorder the terms: -2.18 + x = 1.265859392 Solving -2.18 + x = 1.265859392 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.18' to each side of the equation. -2.18 + 2.18 + x = 1.265859392 + 2.18 Combine like terms: -2.18 + 2.18 = 0.00 0.00 + x = 1.265859392 + 2.18 x = 1.265859392 + 2.18 Combine like terms: 1.265859392 + 2.18 = 3.445859392 x = 3.445859392 Simplifying x = 3.445859392

Subproblem 2

x + -2.18 = -1.265859392 Simplifying x + -2.18 = -1.265859392 Reorder the terms: -2.18 + x = -1.265859392 Solving -2.18 + x = -1.265859392 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.18' to each side of the equation. -2.18 + 2.18 + x = -1.265859392 + 2.18 Combine like terms: -2.18 + 2.18 = 0.00 0.00 + x = -1.265859392 + 2.18 x = -1.265859392 + 2.18 Combine like terms: -1.265859392 + 2.18 = 0.914140608 x = 0.914140608 Simplifying x = 0.914140608

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.445859392, 0.914140608}

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