17x^2+20x-4=0

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Solution for 17x^2+20x-4=0 equation:


Simplifying
17x2 + 20x + -4 = 0

Reorder the terms:
-4 + 20x + 17x2 = 0

Solving
-4 + 20x + 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 + 1.176470588x + x2 = 0

Move the constant term to the right:

Add '0.2352941176' to each side of the equation.
-0.2352941176 + 1.176470588x + 0.2352941176 + x2 = 0 + 0.2352941176

Reorder the terms:
-0.2352941176 + 0.2352941176 + 1.176470588x + x2 = 0 + 0.2352941176

Combine like terms: -0.2352941176 + 0.2352941176 = 0.0000000000
0.0000000000 + 1.176470588x + x2 = 0 + 0.2352941176
1.176470588x + x2 = 0 + 0.2352941176

Combine like terms: 0 + 0.2352941176 = 0.2352941176
1.176470588x + x2 = 0.2352941176

The x term is 1.176470588x.  Take half its coefficient (0.588235294).
Square it (0.3460207611) and add it to both sides.

Add '0.3460207611' to each side of the equation.
1.176470588x + 0.3460207611 + x2 = 0.2352941176 + 0.3460207611

Reorder the terms:
0.3460207611 + 1.176470588x + x2 = 0.2352941176 + 0.3460207611

Combine like terms: 0.2352941176 + 0.3460207611 = 0.5813148787
0.3460207611 + 1.176470588x + x2 = 0.5813148787

Factor a perfect square on the left side:
(x + 0.588235294)(x + 0.588235294) = 0.5813148787

Calculate the square root of the right side: 0.762440082

Break this problem into two subproblems by setting 
(x + 0.588235294) equal to 0.762440082 and -0.762440082.

Subproblem 1

x + 0.588235294 = 0.762440082 Simplifying x + 0.588235294 = 0.762440082 Reorder the terms: 0.588235294 + x = 0.762440082 Solving 0.588235294 + x = 0.762440082 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.588235294' to each side of the equation. 0.588235294 + -0.588235294 + x = 0.762440082 + -0.588235294 Combine like terms: 0.588235294 + -0.588235294 = 0.000000000 0.000000000 + x = 0.762440082 + -0.588235294 x = 0.762440082 + -0.588235294 Combine like terms: 0.762440082 + -0.588235294 = 0.174204788 x = 0.174204788 Simplifying x = 0.174204788

Subproblem 2

x + 0.588235294 = -0.762440082 Simplifying x + 0.588235294 = -0.762440082 Reorder the terms: 0.588235294 + x = -0.762440082 Solving 0.588235294 + x = -0.762440082 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.588235294' to each side of the equation. 0.588235294 + -0.588235294 + x = -0.762440082 + -0.588235294 Combine like terms: 0.588235294 + -0.588235294 = 0.000000000 0.000000000 + x = -0.762440082 + -0.588235294 x = -0.762440082 + -0.588235294 Combine like terms: -0.762440082 + -0.588235294 = -1.350675376 x = -1.350675376 Simplifying x = -1.350675376

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.174204788, -1.350675376}

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