2X^2+23X-9.3=0

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Solution for 2X^2+23X-9.3=0 equation:


Simplifying
2X2 + 23X + -9.3 = 0

Reorder the terms:
-9.3 + 23X + 2X2 = 0

Solving
-9.3 + 23X + 2X2 = 0

Solving for variable 'X'.

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

Divide each side by '2'.
-4.65 + 11.5X + X2 = 0

Move the constant term to the right:

Add '4.65' to each side of the equation.
-4.65 + 11.5X + 4.65 + X2 = 0 + 4.65

Reorder the terms:
-4.65 + 4.65 + 11.5X + X2 = 0 + 4.65

Combine like terms: -4.65 + 4.65 = 0.00
0.00 + 11.5X + X2 = 0 + 4.65
11.5X + X2 = 0 + 4.65

Combine like terms: 0 + 4.65 = 4.65
11.5X + X2 = 4.65

The X term is 11.5X.  Take half its coefficient (5.75).
Square it (33.0625) and add it to both sides.

Add '33.0625' to each side of the equation.
11.5X + 33.0625 + X2 = 4.65 + 33.0625

Reorder the terms:
33.0625 + 11.5X + X2 = 4.65 + 33.0625

Combine like terms: 4.65 + 33.0625 = 37.7125
33.0625 + 11.5X + X2 = 37.7125

Factor a perfect square on the left side:
(X + 5.75)(X + 5.75) = 37.7125

Calculate the square root of the right side: 6.141050399

Break this problem into two subproblems by setting 
(X + 5.75) equal to 6.141050399 and -6.141050399.

Subproblem 1

X + 5.75 = 6.141050399 Simplifying X + 5.75 = 6.141050399 Reorder the terms: 5.75 + X = 6.141050399 Solving 5.75 + X = 6.141050399 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + X = 6.141050399 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + X = 6.141050399 + -5.75 X = 6.141050399 + -5.75 Combine like terms: 6.141050399 + -5.75 = 0.391050399 X = 0.391050399 Simplifying X = 0.391050399

Subproblem 2

X + 5.75 = -6.141050399 Simplifying X + 5.75 = -6.141050399 Reorder the terms: 5.75 + X = -6.141050399 Solving 5.75 + X = -6.141050399 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-5.75' to each side of the equation. 5.75 + -5.75 + X = -6.141050399 + -5.75 Combine like terms: 5.75 + -5.75 = 0.00 0.00 + X = -6.141050399 + -5.75 X = -6.141050399 + -5.75 Combine like terms: -6.141050399 + -5.75 = -11.891050399 X = -11.891050399 Simplifying X = -11.891050399

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.391050399, -11.891050399}

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