17x^2-4x-4=0

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Solution for 17x^2-4x-4=0 equation:


Simplifying
17x2 + -4x + -4 = 0

Reorder the terms:
-4 + -4x + 17x2 = 0

Solving
-4 + -4x + 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'.
-0.2352941176 + -0.2352941176x + x2 = 0

Move the constant term to the right:

Add '0.2352941176' to each side of the equation.
-0.2352941176 + -0.2352941176x + 0.2352941176 + x2 = 0 + 0.2352941176

Reorder the terms:
-0.2352941176 + 0.2352941176 + -0.2352941176x + x2 = 0 + 0.2352941176

Combine like terms: -0.2352941176 + 0.2352941176 = 0.0000000000
0.0000000000 + -0.2352941176x + x2 = 0 + 0.2352941176
-0.2352941176x + x2 = 0 + 0.2352941176

Combine like terms: 0 + 0.2352941176 = 0.2352941176
-0.2352941176x + x2 = 0.2352941176

The x term is -0.2352941176x.  Take half its coefficient (-0.1176470588).
Square it (0.01384083044) and add it to both sides.

Add '0.01384083044' to each side of the equation.
-0.2352941176x + 0.01384083044 + x2 = 0.2352941176 + 0.01384083044

Reorder the terms:
0.01384083044 + -0.2352941176x + x2 = 0.2352941176 + 0.01384083044

Combine like terms: 0.2352941176 + 0.01384083044 = 0.24913494804
0.01384083044 + -0.2352941176x + x2 = 0.24913494804

Factor a perfect square on the left side:
(x + -0.1176470588)(x + -0.1176470588) = 0.24913494804

Calculate the square root of the right side: 0.499134198

Break this problem into two subproblems by setting 
(x + -0.1176470588) equal to 0.499134198 and -0.499134198.

Subproblem 1

x + -0.1176470588 = 0.499134198 Simplifying x + -0.1176470588 = 0.499134198 Reorder the terms: -0.1176470588 + x = 0.499134198 Solving -0.1176470588 + x = 0.499134198 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1176470588' to each side of the equation. -0.1176470588 + 0.1176470588 + x = 0.499134198 + 0.1176470588 Combine like terms: -0.1176470588 + 0.1176470588 = 0.0000000000 0.0000000000 + x = 0.499134198 + 0.1176470588 x = 0.499134198 + 0.1176470588 Combine like terms: 0.499134198 + 0.1176470588 = 0.6167812568 x = 0.6167812568 Simplifying x = 0.6167812568

Subproblem 2

x + -0.1176470588 = -0.499134198 Simplifying x + -0.1176470588 = -0.499134198 Reorder the terms: -0.1176470588 + x = -0.499134198 Solving -0.1176470588 + x = -0.499134198 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1176470588' to each side of the equation. -0.1176470588 + 0.1176470588 + x = -0.499134198 + 0.1176470588 Combine like terms: -0.1176470588 + 0.1176470588 = 0.0000000000 0.0000000000 + x = -0.499134198 + 0.1176470588 x = -0.499134198 + 0.1176470588 Combine like terms: -0.499134198 + 0.1176470588 = -0.3814871392 x = -0.3814871392 Simplifying x = -0.3814871392

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6167812568, -0.3814871392}

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