3x^2-13x-32=0

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Solution for 3x^2-13x-32=0 equation:


Simplifying
3x2 + -13x + -32 = 0

Reorder the terms:
-32 + -13x + 3x2 = 0

Solving
-32 + -13x + 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'.
-10.66666667 + -4.333333333x + x2 = 0

Move the constant term to the right:

Add '10.66666667' to each side of the equation.
-10.66666667 + -4.333333333x + 10.66666667 + x2 = 0 + 10.66666667

Reorder the terms:
-10.66666667 + 10.66666667 + -4.333333333x + x2 = 0 + 10.66666667

Combine like terms: -10.66666667 + 10.66666667 = 0.00000000
0.00000000 + -4.333333333x + x2 = 0 + 10.66666667
-4.333333333x + x2 = 0 + 10.66666667

Combine like terms: 0 + 10.66666667 = 10.66666667
-4.333333333x + x2 = 10.66666667

The x term is -4.333333333x.  Take half its coefficient (-2.166666667).
Square it (4.694444446) and add it to both sides.

Add '4.694444446' to each side of the equation.
-4.333333333x + 4.694444446 + x2 = 10.66666667 + 4.694444446

Reorder the terms:
4.694444446 + -4.333333333x + x2 = 10.66666667 + 4.694444446

Combine like terms: 10.66666667 + 4.694444446 = 15.361111116
4.694444446 + -4.333333333x + x2 = 15.361111116

Factor a perfect square on the left side:
(x + -2.166666667)(x + -2.166666667) = 15.361111116

Calculate the square root of the right side: 3.919325339

Break this problem into two subproblems by setting 
(x + -2.166666667) equal to 3.919325339 and -3.919325339.

Subproblem 1

x + -2.166666667 = 3.919325339 Simplifying x + -2.166666667 = 3.919325339 Reorder the terms: -2.166666667 + x = 3.919325339 Solving -2.166666667 + x = 3.919325339 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.166666667' to each side of the equation. -2.166666667 + 2.166666667 + x = 3.919325339 + 2.166666667 Combine like terms: -2.166666667 + 2.166666667 = 0.000000000 0.000000000 + x = 3.919325339 + 2.166666667 x = 3.919325339 + 2.166666667 Combine like terms: 3.919325339 + 2.166666667 = 6.085992006 x = 6.085992006 Simplifying x = 6.085992006

Subproblem 2

x + -2.166666667 = -3.919325339 Simplifying x + -2.166666667 = -3.919325339 Reorder the terms: -2.166666667 + x = -3.919325339 Solving -2.166666667 + x = -3.919325339 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.166666667' to each side of the equation. -2.166666667 + 2.166666667 + x = -3.919325339 + 2.166666667 Combine like terms: -2.166666667 + 2.166666667 = 0.000000000 0.000000000 + x = -3.919325339 + 2.166666667 x = -3.919325339 + 2.166666667 Combine like terms: -3.919325339 + 2.166666667 = -1.752658672 x = -1.752658672 Simplifying x = -1.752658672

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.085992006, -1.752658672}

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