x^2+x-2.3=0

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Solution for x^2+x-2.3=0 equation:


Simplifying
x2 + x + -2.3 = 0

Reorder the terms:
-2.3 + x + x2 = 0

Solving
-2.3 + x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2.3' to each side of the equation.
-2.3 + x + 2.3 + x2 = 0 + 2.3

Reorder the terms:
-2.3 + 2.3 + x + x2 = 0 + 2.3

Combine like terms: -2.3 + 2.3 = 0.0
0.0 + x + x2 = 0 + 2.3
x + x2 = 0 + 2.3

Combine like terms: 0 + 2.3 = 2.3
x + x2 = 2.3

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 2.3 + 0.25

Reorder the terms:
0.25 + x + x2 = 2.3 + 0.25

Combine like terms: 2.3 + 0.25 = 2.55
0.25 + x + x2 = 2.55

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 2.55

Calculate the square root of the right side: 1.596871942

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.596871942 and -1.596871942.

Subproblem 1

x + 0.5 = 1.596871942 Simplifying x + 0.5 = 1.596871942 Reorder the terms: 0.5 + x = 1.596871942 Solving 0.5 + x = 1.596871942 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.596871942 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.596871942 + -0.5 x = 1.596871942 + -0.5 Combine like terms: 1.596871942 + -0.5 = 1.096871942 x = 1.096871942 Simplifying x = 1.096871942

Subproblem 2

x + 0.5 = -1.596871942 Simplifying x + 0.5 = -1.596871942 Reorder the terms: 0.5 + x = -1.596871942 Solving 0.5 + x = -1.596871942 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.596871942 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.596871942 + -0.5 x = -1.596871942 + -0.5 Combine like terms: -1.596871942 + -0.5 = -2.096871942 x = -2.096871942 Simplifying x = -2.096871942

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.096871942, -2.096871942}

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