x^2-4.86x+2.69=0

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Solution for x^2-4.86x+2.69=0 equation:


Simplifying
x2 + -4.86x + 2.69 = 0

Reorder the terms:
2.69 + -4.86x + x2 = 0

Solving
2.69 + -4.86x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-2.69' to each side of the equation.
2.69 + -4.86x + -2.69 + x2 = 0 + -2.69

Reorder the terms:
2.69 + -2.69 + -4.86x + x2 = 0 + -2.69

Combine like terms: 2.69 + -2.69 = 0.00
0.00 + -4.86x + x2 = 0 + -2.69
-4.86x + x2 = 0 + -2.69

Combine like terms: 0 + -2.69 = -2.69
-4.86x + x2 = -2.69

The x term is -4.86x.  Take half its coefficient (-2.43).
Square it (5.9049) and add it to both sides.

Add '5.9049' to each side of the equation.
-4.86x + 5.9049 + x2 = -2.69 + 5.9049

Reorder the terms:
5.9049 + -4.86x + x2 = -2.69 + 5.9049

Combine like terms: -2.69 + 5.9049 = 3.2149
5.9049 + -4.86x + x2 = 3.2149

Factor a perfect square on the left side:
(x + -2.43)(x + -2.43) = 3.2149

Calculate the square root of the right side: 1.793014222

Break this problem into two subproblems by setting 
(x + -2.43) equal to 1.793014222 and -1.793014222.

Subproblem 1

x + -2.43 = 1.793014222 Simplifying x + -2.43 = 1.793014222 Reorder the terms: -2.43 + x = 1.793014222 Solving -2.43 + x = 1.793014222 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.43' to each side of the equation. -2.43 + 2.43 + x = 1.793014222 + 2.43 Combine like terms: -2.43 + 2.43 = 0.00 0.00 + x = 1.793014222 + 2.43 x = 1.793014222 + 2.43 Combine like terms: 1.793014222 + 2.43 = 4.223014222 x = 4.223014222 Simplifying x = 4.223014222

Subproblem 2

x + -2.43 = -1.793014222 Simplifying x + -2.43 = -1.793014222 Reorder the terms: -2.43 + x = -1.793014222 Solving -2.43 + x = -1.793014222 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.43' to each side of the equation. -2.43 + 2.43 + x = -1.793014222 + 2.43 Combine like terms: -2.43 + 2.43 = 0.00 0.00 + x = -1.793014222 + 2.43 x = -1.793014222 + 2.43 Combine like terms: -1.793014222 + 2.43 = 0.636985778 x = 0.636985778 Simplifying x = 0.636985778

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.223014222, 0.636985778}

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