2x^2+9.5x-9.5=0

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


Simplifying
2x2 + 9.5x + -9.5 = 0

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

Solving
-9.5 + 9.5x + 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 + 4.75x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is 4.75x.  Take half its coefficient (2.375).
Square it (5.640625) and add it to both sides.

Add '5.640625' to each side of the equation.
4.75x + 5.640625 + x2 = 4.75 + 5.640625

Reorder the terms:
5.640625 + 4.75x + x2 = 4.75 + 5.640625

Combine like terms: 4.75 + 5.640625 = 10.390625
5.640625 + 4.75x + x2 = 10.390625

Factor a perfect square on the left side:
(x + 2.375)(x + 2.375) = 10.390625

Calculate the square root of the right side: 3.22344924

Break this problem into two subproblems by setting 
(x + 2.375) equal to 3.22344924 and -3.22344924.

Subproblem 1

x + 2.375 = 3.22344924 Simplifying x + 2.375 = 3.22344924 Reorder the terms: 2.375 + x = 3.22344924 Solving 2.375 + x = 3.22344924 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.375' to each side of the equation. 2.375 + -2.375 + x = 3.22344924 + -2.375 Combine like terms: 2.375 + -2.375 = 0.000 0.000 + x = 3.22344924 + -2.375 x = 3.22344924 + -2.375 Combine like terms: 3.22344924 + -2.375 = 0.84844924 x = 0.84844924 Simplifying x = 0.84844924

Subproblem 2

x + 2.375 = -3.22344924 Simplifying x + 2.375 = -3.22344924 Reorder the terms: 2.375 + x = -3.22344924 Solving 2.375 + x = -3.22344924 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.375' to each side of the equation. 2.375 + -2.375 + x = -3.22344924 + -2.375 Combine like terms: 2.375 + -2.375 = 0.000 0.000 + x = -3.22344924 + -2.375 x = -3.22344924 + -2.375 Combine like terms: -3.22344924 + -2.375 = -5.59844924 x = -5.59844924 Simplifying x = -5.59844924

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.84844924, -5.59844924}

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