2x^2+27x-9.5=0

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Solution for 2x^2+27x-9.5=0 equation:


Simplifying
2x2 + 27x + -9.5 = 0

Reorder the terms:
-9.5 + 27x + 2x2 = 0

Solving
-9.5 + 27x + 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'.
-4.75 + 13.5x + x2 = 0

Move the constant term to the right:

Add '4.75' to each side of the equation.
-4.75 + 13.5x + 4.75 + x2 = 0 + 4.75

Reorder the terms:
-4.75 + 4.75 + 13.5x + x2 = 0 + 4.75

Combine like terms: -4.75 + 4.75 = 0.00
0.00 + 13.5x + x2 = 0 + 4.75
13.5x + x2 = 0 + 4.75

Combine like terms: 0 + 4.75 = 4.75
13.5x + x2 = 4.75

The x term is 13.5x.  Take half its coefficient (6.75).
Square it (45.5625) and add it to both sides.

Add '45.5625' to each side of the equation.
13.5x + 45.5625 + x2 = 4.75 + 45.5625

Reorder the terms:
45.5625 + 13.5x + x2 = 4.75 + 45.5625

Combine like terms: 4.75 + 45.5625 = 50.3125
45.5625 + 13.5x + x2 = 50.3125

Factor a perfect square on the left side:
(x + 6.75)(x + 6.75) = 50.3125

Calculate the square root of the right side: 7.09313048

Break this problem into two subproblems by setting 
(x + 6.75) equal to 7.09313048 and -7.09313048.

Subproblem 1

x + 6.75 = 7.09313048 Simplifying x + 6.75 = 7.09313048 Reorder the terms: 6.75 + x = 7.09313048 Solving 6.75 + x = 7.09313048 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.75' to each side of the equation. 6.75 + -6.75 + x = 7.09313048 + -6.75 Combine like terms: 6.75 + -6.75 = 0.00 0.00 + x = 7.09313048 + -6.75 x = 7.09313048 + -6.75 Combine like terms: 7.09313048 + -6.75 = 0.34313048 x = 0.34313048 Simplifying x = 0.34313048

Subproblem 2

x + 6.75 = -7.09313048 Simplifying x + 6.75 = -7.09313048 Reorder the terms: 6.75 + x = -7.09313048 Solving 6.75 + x = -7.09313048 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.75' to each side of the equation. 6.75 + -6.75 + x = -7.09313048 + -6.75 Combine like terms: 6.75 + -6.75 = 0.00 0.00 + x = -7.09313048 + -6.75 x = -7.09313048 + -6.75 Combine like terms: -7.09313048 + -6.75 = -13.84313048 x = -13.84313048 Simplifying x = -13.84313048

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.34313048, -13.84313048}

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