20x^2+23x=12

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Solution for 20x^2+23x=12 equation:


Simplifying
20x2 + 23x = 12

Reorder the terms:
23x + 20x2 = 12

Solving
23x + 20x2 = 12

Solving for variable 'x'.

Reorder the terms:
-12 + 23x + 20x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 23x + 20x2 = 0

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

Divide each side by '20'.
-0.6 + 1.15x + x2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + 1.15x + 0.6 + x2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + 1.15x + x2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + 1.15x + x2 = 0 + 0.6
1.15x + x2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
1.15x + x2 = 0.6

The x term is 1.15x.  Take half its coefficient (0.575).
Square it (0.330625) and add it to both sides.

Add '0.330625' to each side of the equation.
1.15x + 0.330625 + x2 = 0.6 + 0.330625

Reorder the terms:
0.330625 + 1.15x + x2 = 0.6 + 0.330625

Combine like terms: 0.6 + 0.330625 = 0.930625
0.330625 + 1.15x + x2 = 0.930625

Factor a perfect square on the left side:
(x + 0.575)(x + 0.575) = 0.930625

Calculate the square root of the right side: 0.964689069

Break this problem into two subproblems by setting 
(x + 0.575) equal to 0.964689069 and -0.964689069.

Subproblem 1

x + 0.575 = 0.964689069 Simplifying x + 0.575 = 0.964689069 Reorder the terms: 0.575 + x = 0.964689069 Solving 0.575 + x = 0.964689069 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.575' to each side of the equation. 0.575 + -0.575 + x = 0.964689069 + -0.575 Combine like terms: 0.575 + -0.575 = 0.000 0.000 + x = 0.964689069 + -0.575 x = 0.964689069 + -0.575 Combine like terms: 0.964689069 + -0.575 = 0.389689069 x = 0.389689069 Simplifying x = 0.389689069

Subproblem 2

x + 0.575 = -0.964689069 Simplifying x + 0.575 = -0.964689069 Reorder the terms: 0.575 + x = -0.964689069 Solving 0.575 + x = -0.964689069 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.575' to each side of the equation. 0.575 + -0.575 + x = -0.964689069 + -0.575 Combine like terms: 0.575 + -0.575 = 0.000 0.000 + x = -0.964689069 + -0.575 x = -0.964689069 + -0.575 Combine like terms: -0.964689069 + -0.575 = -1.539689069 x = -1.539689069 Simplifying x = -1.539689069

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.389689069, -1.539689069}

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