11x^2-x-3=0

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Solution for 11x^2-x-3=0 equation:


Simplifying
11x2 + -1x + -3 = 0

Reorder the terms:
-3 + -1x + 11x2 = 0

Solving
-3 + -1x + 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'.
-0.2727272727 + -0.09090909091x + x2 = 0

Move the constant term to the right:

Add '0.2727272727' to each side of the equation.
-0.2727272727 + -0.09090909091x + 0.2727272727 + x2 = 0 + 0.2727272727

Reorder the terms:
-0.2727272727 + 0.2727272727 + -0.09090909091x + x2 = 0 + 0.2727272727

Combine like terms: -0.2727272727 + 0.2727272727 = 0.0000000000
0.0000000000 + -0.09090909091x + x2 = 0 + 0.2727272727
-0.09090909091x + x2 = 0 + 0.2727272727

Combine like terms: 0 + 0.2727272727 = 0.2727272727
-0.09090909091x + x2 = 0.2727272727

The x term is -0.09090909091x.  Take half its coefficient (-0.04545454546).
Square it (0.002066115703) and add it to both sides.

Add '0.002066115703' to each side of the equation.
-0.09090909091x + 0.002066115703 + x2 = 0.2727272727 + 0.002066115703

Reorder the terms:
0.002066115703 + -0.09090909091x + x2 = 0.2727272727 + 0.002066115703

Combine like terms: 0.2727272727 + 0.002066115703 = 0.274793388403
0.002066115703 + -0.09090909091x + x2 = 0.274793388403

Factor a perfect square on the left side:
(x + -0.04545454546)(x + -0.04545454546) = 0.274793388403

Calculate the square root of the right side: 0.524207391

Break this problem into two subproblems by setting 
(x + -0.04545454546) equal to 0.524207391 and -0.524207391.

Subproblem 1

x + -0.04545454546 = 0.524207391 Simplifying x + -0.04545454546 = 0.524207391 Reorder the terms: -0.04545454546 + x = 0.524207391 Solving -0.04545454546 + x = 0.524207391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.04545454546' to each side of the equation. -0.04545454546 + 0.04545454546 + x = 0.524207391 + 0.04545454546 Combine like terms: -0.04545454546 + 0.04545454546 = 0.00000000000 0.00000000000 + x = 0.524207391 + 0.04545454546 x = 0.524207391 + 0.04545454546 Combine like terms: 0.524207391 + 0.04545454546 = 0.56966193646 x = 0.56966193646 Simplifying x = 0.56966193646

Subproblem 2

x + -0.04545454546 = -0.524207391 Simplifying x + -0.04545454546 = -0.524207391 Reorder the terms: -0.04545454546 + x = -0.524207391 Solving -0.04545454546 + x = -0.524207391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.04545454546' to each side of the equation. -0.04545454546 + 0.04545454546 + x = -0.524207391 + 0.04545454546 Combine like terms: -0.04545454546 + 0.04545454546 = 0.00000000000 0.00000000000 + x = -0.524207391 + 0.04545454546 x = -0.524207391 + 0.04545454546 Combine like terms: -0.524207391 + 0.04545454546 = -0.47875284554 x = -0.47875284554 Simplifying x = -0.47875284554

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.56966193646, -0.47875284554}

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