23x^2-54x+12=45

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Solution for 23x^2-54x+12=45 equation:


Simplifying
23x2 + -54x + 12 = 45

Reorder the terms:
12 + -54x + 23x2 = 45

Solving
12 + -54x + 23x2 = 45

Solving for variable 'x'.

Reorder the terms:
12 + -45 + -54x + 23x2 = 45 + -45

Combine like terms: 12 + -45 = -33
-33 + -54x + 23x2 = 45 + -45

Combine like terms: 45 + -45 = 0
-33 + -54x + 23x2 = 0

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

Divide each side by '23'.
-1.434782609 + -2.347826087x + x2 = 0

Move the constant term to the right:

Add '1.434782609' to each side of the equation.
-1.434782609 + -2.347826087x + 1.434782609 + x2 = 0 + 1.434782609

Reorder the terms:
-1.434782609 + 1.434782609 + -2.347826087x + x2 = 0 + 1.434782609

Combine like terms: -1.434782609 + 1.434782609 = 0.000000000
0.000000000 + -2.347826087x + x2 = 0 + 1.434782609
-2.347826087x + x2 = 0 + 1.434782609

Combine like terms: 0 + 1.434782609 = 1.434782609
-2.347826087x + x2 = 1.434782609

The x term is -2.347826087x.  Take half its coefficient (-1.173913044).
Square it (1.378071835) and add it to both sides.

Add '1.378071835' to each side of the equation.
-2.347826087x + 1.378071835 + x2 = 1.434782609 + 1.378071835

Reorder the terms:
1.378071835 + -2.347826087x + x2 = 1.434782609 + 1.378071835

Combine like terms: 1.434782609 + 1.378071835 = 2.812854444
1.378071835 + -2.347826087x + x2 = 2.812854444

Factor a perfect square on the left side:
(x + -1.173913044)(x + -1.173913044) = 2.812854444

Calculate the square root of the right side: 1.677156655

Break this problem into two subproblems by setting 
(x + -1.173913044) equal to 1.677156655 and -1.677156655.

Subproblem 1

x + -1.173913044 = 1.677156655 Simplifying x + -1.173913044 = 1.677156655 Reorder the terms: -1.173913044 + x = 1.677156655 Solving -1.173913044 + x = 1.677156655 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.173913044' to each side of the equation. -1.173913044 + 1.173913044 + x = 1.677156655 + 1.173913044 Combine like terms: -1.173913044 + 1.173913044 = 0.000000000 0.000000000 + x = 1.677156655 + 1.173913044 x = 1.677156655 + 1.173913044 Combine like terms: 1.677156655 + 1.173913044 = 2.851069699 x = 2.851069699 Simplifying x = 2.851069699

Subproblem 2

x + -1.173913044 = -1.677156655 Simplifying x + -1.173913044 = -1.677156655 Reorder the terms: -1.173913044 + x = -1.677156655 Solving -1.173913044 + x = -1.677156655 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.173913044' to each side of the equation. -1.173913044 + 1.173913044 + x = -1.677156655 + 1.173913044 Combine like terms: -1.173913044 + 1.173913044 = 0.000000000 0.000000000 + x = -1.677156655 + 1.173913044 x = -1.677156655 + 1.173913044 Combine like terms: -1.677156655 + 1.173913044 = -0.503243611 x = -0.503243611 Simplifying x = -0.503243611

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.851069699, -0.503243611}

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