17x^2+2x-13=0

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


Simplifying
17x2 + 2x + -13 = 0

Reorder the terms:
-13 + 2x + 17x2 = 0

Solving
-13 + 2x + 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 + 0.1176470588x + x2 = 0

Move the constant term to the right:

Add '0.7647058824' to each side of the equation.
-0.7647058824 + 0.1176470588x + 0.7647058824 + x2 = 0 + 0.7647058824

Reorder the terms:
-0.7647058824 + 0.7647058824 + 0.1176470588x + x2 = 0 + 0.7647058824

Combine like terms: -0.7647058824 + 0.7647058824 = 0.0000000000
0.0000000000 + 0.1176470588x + x2 = 0 + 0.7647058824
0.1176470588x + x2 = 0 + 0.7647058824

Combine like terms: 0 + 0.7647058824 = 0.7647058824
0.1176470588x + x2 = 0.7647058824

The x term is 0.1176470588x.  Take half its coefficient (0.0588235294).
Square it (0.003460207611) and add it to both sides.

Add '0.003460207611' to each side of the equation.
0.1176470588x + 0.003460207611 + x2 = 0.7647058824 + 0.003460207611

Reorder the terms:
0.003460207611 + 0.1176470588x + x2 = 0.7647058824 + 0.003460207611

Combine like terms: 0.7647058824 + 0.003460207611 = 0.768166090011
0.003460207611 + 0.1176470588x + x2 = 0.768166090011

Factor a perfect square on the left side:
(x + 0.0588235294)(x + 0.0588235294) = 0.768166090011

Calculate the square root of the right side: 0.876450849

Break this problem into two subproblems by setting 
(x + 0.0588235294) equal to 0.876450849 and -0.876450849.

Subproblem 1

x + 0.0588235294 = 0.876450849 Simplifying x + 0.0588235294 = 0.876450849 Reorder the terms: 0.0588235294 + x = 0.876450849 Solving 0.0588235294 + x = 0.876450849 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0588235294' to each side of the equation. 0.0588235294 + -0.0588235294 + x = 0.876450849 + -0.0588235294 Combine like terms: 0.0588235294 + -0.0588235294 = 0.0000000000 0.0000000000 + x = 0.876450849 + -0.0588235294 x = 0.876450849 + -0.0588235294 Combine like terms: 0.876450849 + -0.0588235294 = 0.8176273196 x = 0.8176273196 Simplifying x = 0.8176273196

Subproblem 2

x + 0.0588235294 = -0.876450849 Simplifying x + 0.0588235294 = -0.876450849 Reorder the terms: 0.0588235294 + x = -0.876450849 Solving 0.0588235294 + x = -0.876450849 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0588235294' to each side of the equation. 0.0588235294 + -0.0588235294 + x = -0.876450849 + -0.0588235294 Combine like terms: 0.0588235294 + -0.0588235294 = 0.0000000000 0.0000000000 + x = -0.876450849 + -0.0588235294 x = -0.876450849 + -0.0588235294 Combine like terms: -0.876450849 + -0.0588235294 = -0.9352743784 x = -0.9352743784 Simplifying x = -0.9352743784

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8176273196, -0.9352743784}

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