17x^2+4x-20=0

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


Simplifying
17x2 + 4x + -20 = 0

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

Solving
-20 + 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'.
-1.176470588 + 0.2352941176x + x2 = 0

Move the constant term to the right:

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

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

Combine like terms: -1.176470588 + 1.176470588 = 0.000000000
0.000000000 + 0.2352941176x + x2 = 0 + 1.176470588
0.2352941176x + x2 = 0 + 1.176470588

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

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 = 1.176470588 + 0.01384083044

Reorder the terms:
0.01384083044 + 0.2352941176x + x2 = 1.176470588 + 0.01384083044

Combine like terms: 1.176470588 + 0.01384083044 = 1.19031141844
0.01384083044 + 0.2352941176x + x2 = 1.19031141844

Factor a perfect square on the left side:
(x + 0.1176470588)(x + 0.1176470588) = 1.19031141844

Calculate the square root of the right side: 1.091013941

Break this problem into two subproblems by setting 
(x + 0.1176470588) equal to 1.091013941 and -1.091013941.

Subproblem 1

x + 0.1176470588 = 1.091013941 Simplifying x + 0.1176470588 = 1.091013941 Reorder the terms: 0.1176470588 + x = 1.091013941 Solving 0.1176470588 + x = 1.091013941 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 = 1.091013941 + -0.1176470588 Combine like terms: 0.1176470588 + -0.1176470588 = 0.0000000000 0.0000000000 + x = 1.091013941 + -0.1176470588 x = 1.091013941 + -0.1176470588 Combine like terms: 1.091013941 + -0.1176470588 = 0.9733668822 x = 0.9733668822 Simplifying x = 0.9733668822

Subproblem 2

x + 0.1176470588 = -1.091013941 Simplifying x + 0.1176470588 = -1.091013941 Reorder the terms: 0.1176470588 + x = -1.091013941 Solving 0.1176470588 + x = -1.091013941 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 = -1.091013941 + -0.1176470588 Combine like terms: 0.1176470588 + -0.1176470588 = 0.0000000000 0.0000000000 + x = -1.091013941 + -0.1176470588 x = -1.091013941 + -0.1176470588 Combine like terms: -1.091013941 + -0.1176470588 = -1.2086609998 x = -1.2086609998 Simplifying x = -1.2086609998

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9733668822, -1.2086609998}

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