-17x^2+13x+13=0

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Solution for -17x^2+13x+13=0 equation:


Simplifying
-17x2 + 13x + 13 = 0

Reorder the terms:
13 + 13x + -17x2 = 0

Solving
13 + 13x + -17x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-17 the coefficient of the squared term: 

Divide each side by '-17'.
-0.7647058824 + -0.7647058824x + x2 = 0

Move the constant term to the right:

Add '0.7647058824' to each side of the equation.
-0.7647058824 + -0.7647058824x + 0.7647058824 + x2 = 0 + 0.7647058824

Reorder the terms:
-0.7647058824 + 0.7647058824 + -0.7647058824x + x2 = 0 + 0.7647058824

Combine like terms: -0.7647058824 + 0.7647058824 = 0.0000000000
0.0000000000 + -0.7647058824x + x2 = 0 + 0.7647058824
-0.7647058824x + x2 = 0 + 0.7647058824

Combine like terms: 0 + 0.7647058824 = 0.7647058824
-0.7647058824x + x2 = 0.7647058824

The x term is -0.7647058824x.  Take half its coefficient (-0.3823529412).
Square it (0.1461937716) and add it to both sides.

Add '0.1461937716' to each side of the equation.
-0.7647058824x + 0.1461937716 + x2 = 0.7647058824 + 0.1461937716

Reorder the terms:
0.1461937716 + -0.7647058824x + x2 = 0.7647058824 + 0.1461937716

Combine like terms: 0.7647058824 + 0.1461937716 = 0.910899654
0.1461937716 + -0.7647058824x + x2 = 0.910899654

Factor a perfect square on the left side:
(x + -0.3823529412)(x + -0.3823529412) = 0.910899654

Calculate the square root of the right side: 0.954410632

Break this problem into two subproblems by setting 
(x + -0.3823529412) equal to 0.954410632 and -0.954410632.

Subproblem 1

x + -0.3823529412 = 0.954410632 Simplifying x + -0.3823529412 = 0.954410632 Reorder the terms: -0.3823529412 + x = 0.954410632 Solving -0.3823529412 + x = 0.954410632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3823529412' to each side of the equation. -0.3823529412 + 0.3823529412 + x = 0.954410632 + 0.3823529412 Combine like terms: -0.3823529412 + 0.3823529412 = 0.0000000000 0.0000000000 + x = 0.954410632 + 0.3823529412 x = 0.954410632 + 0.3823529412 Combine like terms: 0.954410632 + 0.3823529412 = 1.3367635732 x = 1.3367635732 Simplifying x = 1.3367635732

Subproblem 2

x + -0.3823529412 = -0.954410632 Simplifying x + -0.3823529412 = -0.954410632 Reorder the terms: -0.3823529412 + x = -0.954410632 Solving -0.3823529412 + x = -0.954410632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3823529412' to each side of the equation. -0.3823529412 + 0.3823529412 + x = -0.954410632 + 0.3823529412 Combine like terms: -0.3823529412 + 0.3823529412 = 0.0000000000 0.0000000000 + x = -0.954410632 + 0.3823529412 x = -0.954410632 + 0.3823529412 Combine like terms: -0.954410632 + 0.3823529412 = -0.5720576908 x = -0.5720576908 Simplifying x = -0.5720576908

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3367635732, -0.5720576908}

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