17x^2-14x-20=0

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Solution for 17x^2-14x-20=0 equation:


Simplifying
17x2 + -14x + -20 = 0

Reorder the terms:
-20 + -14x + 17x2 = 0

Solving
-20 + -14x + 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 + -0.8235294118x + x2 = 0

Move the constant term to the right:

Add '1.176470588' to each side of the equation.
-1.176470588 + -0.8235294118x + 1.176470588 + x2 = 0 + 1.176470588

Reorder the terms:
-1.176470588 + 1.176470588 + -0.8235294118x + x2 = 0 + 1.176470588

Combine like terms: -1.176470588 + 1.176470588 = 0.000000000
0.000000000 + -0.8235294118x + x2 = 0 + 1.176470588
-0.8235294118x + x2 = 0 + 1.176470588

Combine like terms: 0 + 1.176470588 = 1.176470588
-0.8235294118x + x2 = 1.176470588

The x term is -0.8235294118x.  Take half its coefficient (-0.4117647059).
Square it (0.1695501730) and add it to both sides.

Add '0.1695501730' to each side of the equation.
-0.8235294118x + 0.1695501730 + x2 = 1.176470588 + 0.1695501730

Reorder the terms:
0.1695501730 + -0.8235294118x + x2 = 1.176470588 + 0.1695501730

Combine like terms: 1.176470588 + 0.1695501730 = 1.346020761
0.1695501730 + -0.8235294118x + x2 = 1.346020761

Factor a perfect square on the left side:
(x + -0.4117647059)(x + -0.4117647059) = 1.346020761

Calculate the square root of the right side: 1.160181348

Break this problem into two subproblems by setting 
(x + -0.4117647059) equal to 1.160181348 and -1.160181348.

Subproblem 1

x + -0.4117647059 = 1.160181348 Simplifying x + -0.4117647059 = 1.160181348 Reorder the terms: -0.4117647059 + x = 1.160181348 Solving -0.4117647059 + x = 1.160181348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4117647059' to each side of the equation. -0.4117647059 + 0.4117647059 + x = 1.160181348 + 0.4117647059 Combine like terms: -0.4117647059 + 0.4117647059 = 0.0000000000 0.0000000000 + x = 1.160181348 + 0.4117647059 x = 1.160181348 + 0.4117647059 Combine like terms: 1.160181348 + 0.4117647059 = 1.5719460539 x = 1.5719460539 Simplifying x = 1.5719460539

Subproblem 2

x + -0.4117647059 = -1.160181348 Simplifying x + -0.4117647059 = -1.160181348 Reorder the terms: -0.4117647059 + x = -1.160181348 Solving -0.4117647059 + x = -1.160181348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4117647059' to each side of the equation. -0.4117647059 + 0.4117647059 + x = -1.160181348 + 0.4117647059 Combine like terms: -0.4117647059 + 0.4117647059 = 0.0000000000 0.0000000000 + x = -1.160181348 + 0.4117647059 x = -1.160181348 + 0.4117647059 Combine like terms: -1.160181348 + 0.4117647059 = -0.7484166421 x = -0.7484166421 Simplifying x = -0.7484166421

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.5719460539, -0.7484166421}

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