x^2+2x-6.1=0

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Solution for x^2+2x-6.1=0 equation:


Simplifying
x2 + 2x + -6.1 = 0

Reorder the terms:
-6.1 + 2x + x2 = 0

Solving
-6.1 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '6.1' to each side of the equation.
-6.1 + 2x + 6.1 + x2 = 0 + 6.1

Reorder the terms:
-6.1 + 6.1 + 2x + x2 = 0 + 6.1

Combine like terms: -6.1 + 6.1 = 0.0
0.0 + 2x + x2 = 0 + 6.1
2x + x2 = 0 + 6.1

Combine like terms: 0 + 6.1 = 6.1
2x + x2 = 6.1

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 6.1 + 1

Reorder the terms:
1 + 2x + x2 = 6.1 + 1

Combine like terms: 6.1 + 1 = 7.1
1 + 2x + x2 = 7.1

Factor a perfect square on the left side:
(x + 1)(x + 1) = 7.1

Calculate the square root of the right side: 2.664582519

Break this problem into two subproblems by setting 
(x + 1) equal to 2.664582519 and -2.664582519.

Subproblem 1

x + 1 = 2.664582519 Simplifying x + 1 = 2.664582519 Reorder the terms: 1 + x = 2.664582519 Solving 1 + x = 2.664582519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 2.664582519 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.664582519 + -1 x = 2.664582519 + -1 Combine like terms: 2.664582519 + -1 = 1.664582519 x = 1.664582519 Simplifying x = 1.664582519

Subproblem 2

x + 1 = -2.664582519 Simplifying x + 1 = -2.664582519 Reorder the terms: 1 + x = -2.664582519 Solving 1 + x = -2.664582519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -2.664582519 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.664582519 + -1 x = -2.664582519 + -1 Combine like terms: -2.664582519 + -1 = -3.664582519 x = -3.664582519 Simplifying x = -3.664582519

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.664582519, -3.664582519}

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