17x^2+8x-2400=0

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Solution for 17x^2+8x-2400=0 equation:


Simplifying
17x2 + 8x + -2400 = 0

Reorder the terms:
-2400 + 8x + 17x2 = 0

Solving
-2400 + 8x + 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'.
-141.1764706 + 0.4705882353x + x2 = 0

Move the constant term to the right:

Add '141.1764706' to each side of the equation.
-141.1764706 + 0.4705882353x + 141.1764706 + x2 = 0 + 141.1764706

Reorder the terms:
-141.1764706 + 141.1764706 + 0.4705882353x + x2 = 0 + 141.1764706

Combine like terms: -141.1764706 + 141.1764706 = 0.0000000
0.0000000 + 0.4705882353x + x2 = 0 + 141.1764706
0.4705882353x + x2 = 0 + 141.1764706

Combine like terms: 0 + 141.1764706 = 141.1764706
0.4705882353x + x2 = 141.1764706

The x term is 0.4705882353x.  Take half its coefficient (0.2352941177).
Square it (0.05536332182) and add it to both sides.

Add '0.05536332182' to each side of the equation.
0.4705882353x + 0.05536332182 + x2 = 141.1764706 + 0.05536332182

Reorder the terms:
0.05536332182 + 0.4705882353x + x2 = 141.1764706 + 0.05536332182

Combine like terms: 141.1764706 + 0.05536332182 = 141.23183392182
0.05536332182 + 0.4705882353x + x2 = 141.23183392182

Factor a perfect square on the left side:
(x + 0.2352941177)(x + 0.2352941177) = 141.23183392182

Calculate the square root of the right side: 11.884100047

Break this problem into two subproblems by setting 
(x + 0.2352941177) equal to 11.884100047 and -11.884100047.

Subproblem 1

x + 0.2352941177 = 11.884100047 Simplifying x + 0.2352941177 = 11.884100047 Reorder the terms: 0.2352941177 + x = 11.884100047 Solving 0.2352941177 + x = 11.884100047 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2352941177' to each side of the equation. 0.2352941177 + -0.2352941177 + x = 11.884100047 + -0.2352941177 Combine like terms: 0.2352941177 + -0.2352941177 = 0.0000000000 0.0000000000 + x = 11.884100047 + -0.2352941177 x = 11.884100047 + -0.2352941177 Combine like terms: 11.884100047 + -0.2352941177 = 11.6488059293 x = 11.6488059293 Simplifying x = 11.6488059293

Subproblem 2

x + 0.2352941177 = -11.884100047 Simplifying x + 0.2352941177 = -11.884100047 Reorder the terms: 0.2352941177 + x = -11.884100047 Solving 0.2352941177 + x = -11.884100047 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2352941177' to each side of the equation. 0.2352941177 + -0.2352941177 + x = -11.884100047 + -0.2352941177 Combine like terms: 0.2352941177 + -0.2352941177 = 0.0000000000 0.0000000000 + x = -11.884100047 + -0.2352941177 x = -11.884100047 + -0.2352941177 Combine like terms: -11.884100047 + -0.2352941177 = -12.1193941647 x = -12.1193941647 Simplifying x = -12.1193941647

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.6488059293, -12.1193941647}

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