2x^2+17x-9.3=0

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Solution for 2x^2+17x-9.3=0 equation:


Simplifying
2x2 + 17x + -9.3 = 0

Reorder the terms:
-9.3 + 17x + 2x2 = 0

Solving
-9.3 + 17x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-4.65 + 8.5x + x2 = 0

Move the constant term to the right:

Add '4.65' to each side of the equation.
-4.65 + 8.5x + 4.65 + x2 = 0 + 4.65

Reorder the terms:
-4.65 + 4.65 + 8.5x + x2 = 0 + 4.65

Combine like terms: -4.65 + 4.65 = 0.00
0.00 + 8.5x + x2 = 0 + 4.65
8.5x + x2 = 0 + 4.65

Combine like terms: 0 + 4.65 = 4.65
8.5x + x2 = 4.65

The x term is 8.5x.  Take half its coefficient (4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
8.5x + 18.0625 + x2 = 4.65 + 18.0625

Reorder the terms:
18.0625 + 8.5x + x2 = 4.65 + 18.0625

Combine like terms: 4.65 + 18.0625 = 22.7125
18.0625 + 8.5x + x2 = 22.7125

Factor a perfect square on the left side:
(x + 4.25)(x + 4.25) = 22.7125

Calculate the square root of the right side: 4.765763318

Break this problem into two subproblems by setting 
(x + 4.25) equal to 4.765763318 and -4.765763318.

Subproblem 1

x + 4.25 = 4.765763318 Simplifying x + 4.25 = 4.765763318 Reorder the terms: 4.25 + x = 4.765763318 Solving 4.25 + x = 4.765763318 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + x = 4.765763318 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = 4.765763318 + -4.25 x = 4.765763318 + -4.25 Combine like terms: 4.765763318 + -4.25 = 0.515763318 x = 0.515763318 Simplifying x = 0.515763318

Subproblem 2

x + 4.25 = -4.765763318 Simplifying x + 4.25 = -4.765763318 Reorder the terms: 4.25 + x = -4.765763318 Solving 4.25 + x = -4.765763318 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + x = -4.765763318 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = -4.765763318 + -4.25 x = -4.765763318 + -4.25 Combine like terms: -4.765763318 + -4.25 = -9.015763318 x = -9.015763318 Simplifying x = -9.015763318

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.515763318, -9.015763318}

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