2x^2+33x-9.1=0

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Solution for 2x^2+33x-9.1=0 equation:


Simplifying
2x2 + 33x + -9.1 = 0

Reorder the terms:
-9.1 + 33x + 2x2 = 0

Solving
-9.1 + 33x + 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'.
-4.55 + 16.5x + x2 = 0

Move the constant term to the right:

Add '4.55' to each side of the equation.
-4.55 + 16.5x + 4.55 + x2 = 0 + 4.55

Reorder the terms:
-4.55 + 4.55 + 16.5x + x2 = 0 + 4.55

Combine like terms: -4.55 + 4.55 = 0.00
0.00 + 16.5x + x2 = 0 + 4.55
16.5x + x2 = 0 + 4.55

Combine like terms: 0 + 4.55 = 4.55
16.5x + x2 = 4.55

The x term is 16.5x.  Take half its coefficient (8.25).
Square it (68.0625) and add it to both sides.

Add '68.0625' to each side of the equation.
16.5x + 68.0625 + x2 = 4.55 + 68.0625

Reorder the terms:
68.0625 + 16.5x + x2 = 4.55 + 68.0625

Combine like terms: 4.55 + 68.0625 = 72.6125
68.0625 + 16.5x + x2 = 72.6125

Factor a perfect square on the left side:
(x + 8.25)(x + 8.25) = 72.6125

Calculate the square root of the right side: 8.52129685

Break this problem into two subproblems by setting 
(x + 8.25) equal to 8.52129685 and -8.52129685.

Subproblem 1

x + 8.25 = 8.52129685 Simplifying x + 8.25 = 8.52129685 Reorder the terms: 8.25 + x = 8.52129685 Solving 8.25 + x = 8.52129685 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.25' to each side of the equation. 8.25 + -8.25 + x = 8.52129685 + -8.25 Combine like terms: 8.25 + -8.25 = 0.00 0.00 + x = 8.52129685 + -8.25 x = 8.52129685 + -8.25 Combine like terms: 8.52129685 + -8.25 = 0.27129685 x = 0.27129685 Simplifying x = 0.27129685

Subproblem 2

x + 8.25 = -8.52129685 Simplifying x + 8.25 = -8.52129685 Reorder the terms: 8.25 + x = -8.52129685 Solving 8.25 + x = -8.52129685 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.25' to each side of the equation. 8.25 + -8.25 + x = -8.52129685 + -8.25 Combine like terms: 8.25 + -8.25 = 0.00 0.00 + x = -8.52129685 + -8.25 x = -8.52129685 + -8.25 Combine like terms: -8.52129685 + -8.25 = -16.77129685 x = -16.77129685 Simplifying x = -16.77129685

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.27129685, -16.77129685}

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