x^2+2.23x-3=0

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Solution for x^2+2.23x-3=0 equation:


Simplifying
x2 + 2.23x + -3 = 0

Reorder the terms:
-3 + 2.23x + x2 = 0

Solving
-3 + 2.23x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 2.23x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 2.23x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 2.23x + x2 = 0 + 3
2.23x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
2.23x + x2 = 3

The x term is 2.23x.  Take half its coefficient (1.115).
Square it (1.243225) and add it to both sides.

Add '1.243225' to each side of the equation.
2.23x + 1.243225 + x2 = 3 + 1.243225

Reorder the terms:
1.243225 + 2.23x + x2 = 3 + 1.243225

Combine like terms: 3 + 1.243225 = 4.243225
1.243225 + 2.23x + x2 = 4.243225

Factor a perfect square on the left side:
(x + 1.115)(x + 1.115) = 4.243225

Calculate the square root of the right side: 2.059908979

Break this problem into two subproblems by setting 
(x + 1.115) equal to 2.059908979 and -2.059908979.

Subproblem 1

x + 1.115 = 2.059908979 Simplifying x + 1.115 = 2.059908979 Reorder the terms: 1.115 + x = 2.059908979 Solving 1.115 + x = 2.059908979 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.115' to each side of the equation. 1.115 + -1.115 + x = 2.059908979 + -1.115 Combine like terms: 1.115 + -1.115 = 0.000 0.000 + x = 2.059908979 + -1.115 x = 2.059908979 + -1.115 Combine like terms: 2.059908979 + -1.115 = 0.944908979 x = 0.944908979 Simplifying x = 0.944908979

Subproblem 2

x + 1.115 = -2.059908979 Simplifying x + 1.115 = -2.059908979 Reorder the terms: 1.115 + x = -2.059908979 Solving 1.115 + x = -2.059908979 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.115' to each side of the equation. 1.115 + -1.115 + x = -2.059908979 + -1.115 Combine like terms: 1.115 + -1.115 = 0.000 0.000 + x = -2.059908979 + -1.115 x = -2.059908979 + -1.115 Combine like terms: -2.059908979 + -1.115 = -3.174908979 x = -3.174908979 Simplifying x = -3.174908979

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.944908979, -3.174908979}

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