11x^2+15x-2684=0

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Solution for 11x^2+15x-2684=0 equation:


Simplifying
11x2 + 15x + -2684 = 0

Reorder the terms:
-2684 + 15x + 11x2 = 0

Solving
-2684 + 15x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-244 + 1.363636364x + x2 = 0

Move the constant term to the right:

Add '244' to each side of the equation.
-244 + 1.363636364x + 244 + x2 = 0 + 244

Reorder the terms:
-244 + 244 + 1.363636364x + x2 = 0 + 244

Combine like terms: -244 + 244 = 0
0 + 1.363636364x + x2 = 0 + 244
1.363636364x + x2 = 0 + 244

Combine like terms: 0 + 244 = 244
1.363636364x + x2 = 244

The x term is 1.363636364x.  Take half its coefficient (0.681818182).
Square it (0.4648760333) and add it to both sides.

Add '0.4648760333' to each side of the equation.
1.363636364x + 0.4648760333 + x2 = 244 + 0.4648760333

Reorder the terms:
0.4648760333 + 1.363636364x + x2 = 244 + 0.4648760333

Combine like terms: 244 + 0.4648760333 = 244.4648760333
0.4648760333 + 1.363636364x + x2 = 244.4648760333

Factor a perfect square on the left side:
(x + 0.681818182)(x + 0.681818182) = 244.4648760333

Calculate the square root of the right side: 15.63537259

Break this problem into two subproblems by setting 
(x + 0.681818182) equal to 15.63537259 and -15.63537259.

Subproblem 1

x + 0.681818182 = 15.63537259 Simplifying x + 0.681818182 = 15.63537259 Reorder the terms: 0.681818182 + x = 15.63537259 Solving 0.681818182 + x = 15.63537259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.681818182' to each side of the equation. 0.681818182 + -0.681818182 + x = 15.63537259 + -0.681818182 Combine like terms: 0.681818182 + -0.681818182 = 0.000000000 0.000000000 + x = 15.63537259 + -0.681818182 x = 15.63537259 + -0.681818182 Combine like terms: 15.63537259 + -0.681818182 = 14.953554408 x = 14.953554408 Simplifying x = 14.953554408

Subproblem 2

x + 0.681818182 = -15.63537259 Simplifying x + 0.681818182 = -15.63537259 Reorder the terms: 0.681818182 + x = -15.63537259 Solving 0.681818182 + x = -15.63537259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.681818182' to each side of the equation. 0.681818182 + -0.681818182 + x = -15.63537259 + -0.681818182 Combine like terms: 0.681818182 + -0.681818182 = 0.000000000 0.000000000 + x = -15.63537259 + -0.681818182 x = -15.63537259 + -0.681818182 Combine like terms: -15.63537259 + -0.681818182 = -16.317190772 x = -16.317190772 Simplifying x = -16.317190772

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.953554408, -16.317190772}

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