3x^2+23x-500=0

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Solution for 3x^2+23x-500=0 equation:


Simplifying
3x2 + 23x + -500 = 0

Reorder the terms:
-500 + 23x + 3x2 = 0

Solving
-500 + 23x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-166.6666667 + 7.666666667x + x2 = 0

Move the constant term to the right:

Add '166.6666667' to each side of the equation.
-166.6666667 + 7.666666667x + 166.6666667 + x2 = 0 + 166.6666667

Reorder the terms:
-166.6666667 + 166.6666667 + 7.666666667x + x2 = 0 + 166.6666667

Combine like terms: -166.6666667 + 166.6666667 = 0.0000000
0.0000000 + 7.666666667x + x2 = 0 + 166.6666667
7.666666667x + x2 = 0 + 166.6666667

Combine like terms: 0 + 166.6666667 = 166.6666667
7.666666667x + x2 = 166.6666667

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 = 166.6666667 + 14.69444445

Reorder the terms:
14.69444445 + 7.666666667x + x2 = 166.6666667 + 14.69444445

Combine like terms: 166.6666667 + 14.69444445 = 181.36111115
14.69444445 + 7.666666667x + x2 = 181.36111115

Factor a perfect square on the left side:
(x + 3.833333334)(x + 3.833333334) = 181.36111115

Calculate the square root of the right side: 13.46703795

Break this problem into two subproblems by setting 
(x + 3.833333334) equal to 13.46703795 and -13.46703795.

Subproblem 1

x + 3.833333334 = 13.46703795 Simplifying x + 3.833333334 = 13.46703795 Reorder the terms: 3.833333334 + x = 13.46703795 Solving 3.833333334 + x = 13.46703795 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 = 13.46703795 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = 13.46703795 + -3.833333334 x = 13.46703795 + -3.833333334 Combine like terms: 13.46703795 + -3.833333334 = 9.633704616 x = 9.633704616 Simplifying x = 9.633704616

Subproblem 2

x + 3.833333334 = -13.46703795 Simplifying x + 3.833333334 = -13.46703795 Reorder the terms: 3.833333334 + x = -13.46703795 Solving 3.833333334 + x = -13.46703795 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 = -13.46703795 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = -13.46703795 + -3.833333334 x = -13.46703795 + -3.833333334 Combine like terms: -13.46703795 + -3.833333334 = -17.300371284 x = -17.300371284 Simplifying x = -17.300371284

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.633704616, -17.300371284}

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