8.06x^2+25.8726x-25.047256=0

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Solution for 8.06x^2+25.8726x-25.047256=0 equation:


Simplifying
8.06x2 + 25.8726x + -25.047256 = 0

Reorder the terms:
-25.047256 + 25.8726x + 8.06x2 = 0

Solving
-25.047256 + 25.8726x + 8.06x2 = 0

Solving for variable 'x'.

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

Divide each side by '8.06'.
-3.1076 + 3.21x + x2 = 0

Move the constant term to the right:

Add '3.1076' to each side of the equation.
-3.1076 + 3.21x + 3.1076 + x2 = 0 + 3.1076

Reorder the terms:
-3.1076 + 3.1076 + 3.21x + x2 = 0 + 3.1076

Combine like terms: -3.1076 + 3.1076 = 0.0000
0.0000 + 3.21x + x2 = 0 + 3.1076
3.21x + x2 = 0 + 3.1076

Combine like terms: 0 + 3.1076 = 3.1076
3.21x + x2 = 3.1076

The x term is 3.21x.  Take half its coefficient (1.605).
Square it (2.576025) and add it to both sides.

Add '2.576025' to each side of the equation.
3.21x + 2.576025 + x2 = 3.1076 + 2.576025

Reorder the terms:
2.576025 + 3.21x + x2 = 3.1076 + 2.576025

Combine like terms: 3.1076 + 2.576025 = 5.683625
2.576025 + 3.21x + x2 = 5.683625

Factor a perfect square on the left side:
(x + 1.605)(x + 1.605) = 5.683625

Calculate the square root of the right side: 2.384035444

Break this problem into two subproblems by setting 
(x + 1.605) equal to 2.384035444 and -2.384035444.

Subproblem 1

x + 1.605 = 2.384035444 Simplifying x + 1.605 = 2.384035444 Reorder the terms: 1.605 + x = 2.384035444 Solving 1.605 + x = 2.384035444 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.605' to each side of the equation. 1.605 + -1.605 + x = 2.384035444 + -1.605 Combine like terms: 1.605 + -1.605 = 0.000 0.000 + x = 2.384035444 + -1.605 x = 2.384035444 + -1.605 Combine like terms: 2.384035444 + -1.605 = 0.779035444 x = 0.779035444 Simplifying x = 0.779035444

Subproblem 2

x + 1.605 = -2.384035444 Simplifying x + 1.605 = -2.384035444 Reorder the terms: 1.605 + x = -2.384035444 Solving 1.605 + x = -2.384035444 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.605' to each side of the equation. 1.605 + -1.605 + x = -2.384035444 + -1.605 Combine like terms: 1.605 + -1.605 = 0.000 0.000 + x = -2.384035444 + -1.605 x = -2.384035444 + -1.605 Combine like terms: -2.384035444 + -1.605 = -3.989035444 x = -3.989035444 Simplifying x = -3.989035444

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.779035444, -3.989035444}

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