12-3x^2=23x

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Solution for 12-3x^2=23x equation:


Simplifying
12 + -3x2 = 23x

Solving
12 + -3x2 = 23x

Solving for variable 'x'.

Reorder the terms:
12 + -23x + -3x2 = 23x + -23x

Combine like terms: 23x + -23x = 0
12 + -23x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-4 + 7.666666667x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 7.666666667x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 7.666666667x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 7.666666667x + x2 = 0 + 4
7.666666667x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
7.666666667x + x2 = 4

The x term is 7.666666667x.  Take half its coefficient (3.833333334).
Square it (14.69444445) and add it to both sides.

Add '14.69444445' to each side of the equation.
7.666666667x + 14.69444445 + x2 = 4 + 14.69444445

Reorder the terms:
14.69444445 + 7.666666667x + x2 = 4 + 14.69444445

Combine like terms: 4 + 14.69444445 = 18.69444445
14.69444445 + 7.666666667x + x2 = 18.69444445

Factor a perfect square on the left side:
(x + 3.833333334)(x + 3.833333334) = 18.69444445

Calculate the square root of the right side: 4.323707258

Break this problem into two subproblems by setting 
(x + 3.833333334) equal to 4.323707258 and -4.323707258.

Subproblem 1

x + 3.833333334 = 4.323707258 Simplifying x + 3.833333334 = 4.323707258 Reorder the terms: 3.833333334 + x = 4.323707258 Solving 3.833333334 + x = 4.323707258 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + x = 4.323707258 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = 4.323707258 + -3.833333334 x = 4.323707258 + -3.833333334 Combine like terms: 4.323707258 + -3.833333334 = 0.490373924 x = 0.490373924 Simplifying x = 0.490373924

Subproblem 2

x + 3.833333334 = -4.323707258 Simplifying x + 3.833333334 = -4.323707258 Reorder the terms: 3.833333334 + x = -4.323707258 Solving 3.833333334 + x = -4.323707258 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + x = -4.323707258 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = -4.323707258 + -3.833333334 x = -4.323707258 + -3.833333334 Combine like terms: -4.323707258 + -3.833333334 = -8.157040592 x = -8.157040592 Simplifying x = -8.157040592

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.490373924, -8.157040592}

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