23x^2+18x-3=0

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Solution for 23x^2+18x-3=0 equation:


Simplifying
23x2 + 18x + -3 = 0

Reorder the terms:
-3 + 18x + 23x2 = 0

Solving
-3 + 18x + 23x2 = 0

Solving for variable 'x'.

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

Divide each side by '23'.
-0.1304347826 + 0.7826086957x + x2 = 0

Move the constant term to the right:

Add '0.1304347826' to each side of the equation.
-0.1304347826 + 0.7826086957x + 0.1304347826 + x2 = 0 + 0.1304347826

Reorder the terms:
-0.1304347826 + 0.1304347826 + 0.7826086957x + x2 = 0 + 0.1304347826

Combine like terms: -0.1304347826 + 0.1304347826 = 0.0000000000
0.0000000000 + 0.7826086957x + x2 = 0 + 0.1304347826
0.7826086957x + x2 = 0 + 0.1304347826

Combine like terms: 0 + 0.1304347826 = 0.1304347826
0.7826086957x + x2 = 0.1304347826

The x term is 0.7826086957x.  Take half its coefficient (0.3913043479).
Square it (0.1531190927) and add it to both sides.

Add '0.1531190927' to each side of the equation.
0.7826086957x + 0.1531190927 + x2 = 0.1304347826 + 0.1531190927

Reorder the terms:
0.1531190927 + 0.7826086957x + x2 = 0.1304347826 + 0.1531190927

Combine like terms: 0.1304347826 + 0.1531190927 = 0.2835538753
0.1531190927 + 0.7826086957x + x2 = 0.2835538753

Factor a perfect square on the left side:
(x + 0.3913043479)(x + 0.3913043479) = 0.2835538753

Calculate the square root of the right side: 0.53249777

Break this problem into two subproblems by setting 
(x + 0.3913043479) equal to 0.53249777 and -0.53249777.

Subproblem 1

x + 0.3913043479 = 0.53249777 Simplifying x + 0.3913043479 = 0.53249777 Reorder the terms: 0.3913043479 + x = 0.53249777 Solving 0.3913043479 + x = 0.53249777 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3913043479' to each side of the equation. 0.3913043479 + -0.3913043479 + x = 0.53249777 + -0.3913043479 Combine like terms: 0.3913043479 + -0.3913043479 = 0.0000000000 0.0000000000 + x = 0.53249777 + -0.3913043479 x = 0.53249777 + -0.3913043479 Combine like terms: 0.53249777 + -0.3913043479 = 0.1411934221 x = 0.1411934221 Simplifying x = 0.1411934221

Subproblem 2

x + 0.3913043479 = -0.53249777 Simplifying x + 0.3913043479 = -0.53249777 Reorder the terms: 0.3913043479 + x = -0.53249777 Solving 0.3913043479 + x = -0.53249777 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3913043479' to each side of the equation. 0.3913043479 + -0.3913043479 + x = -0.53249777 + -0.3913043479 Combine like terms: 0.3913043479 + -0.3913043479 = 0.0000000000 0.0000000000 + x = -0.53249777 + -0.3913043479 x = -0.53249777 + -0.3913043479 Combine like terms: -0.53249777 + -0.3913043479 = -0.9238021179 x = -0.9238021179 Simplifying x = -0.9238021179

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1411934221, -0.9238021179}

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