2x^2-25x-9.3=0

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Solution for 2x^2-25x-9.3=0 equation:


Simplifying
2x2 + -25x + -9.3 = 0

Reorder the terms:
-9.3 + -25x + 2x2 = 0

Solving
-9.3 + -25x + 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 + -12.5x + x2 = 0

Move the constant term to the right:

Add '4.65' to each side of the equation.
-4.65 + -12.5x + 4.65 + x2 = 0 + 4.65

Reorder the terms:
-4.65 + 4.65 + -12.5x + x2 = 0 + 4.65

Combine like terms: -4.65 + 4.65 = 0.00
0.00 + -12.5x + x2 = 0 + 4.65
-12.5x + x2 = 0 + 4.65

Combine like terms: 0 + 4.65 = 4.65
-12.5x + x2 = 4.65

The x term is -12.5x.  Take half its coefficient (-6.25).
Square it (39.0625) and add it to both sides.

Add '39.0625' to each side of the equation.
-12.5x + 39.0625 + x2 = 4.65 + 39.0625

Reorder the terms:
39.0625 + -12.5x + x2 = 4.65 + 39.0625

Combine like terms: 4.65 + 39.0625 = 43.7125
39.0625 + -12.5x + x2 = 43.7125

Factor a perfect square on the left side:
(x + -6.25)(x + -6.25) = 43.7125

Calculate the square root of the right side: 6.611542936

Break this problem into two subproblems by setting 
(x + -6.25) equal to 6.611542936 and -6.611542936.

Subproblem 1

x + -6.25 = 6.611542936 Simplifying x + -6.25 = 6.611542936 Reorder the terms: -6.25 + x = 6.611542936 Solving -6.25 + x = 6.611542936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = 6.611542936 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = 6.611542936 + 6.25 x = 6.611542936 + 6.25 Combine like terms: 6.611542936 + 6.25 = 12.861542936 x = 12.861542936 Simplifying x = 12.861542936

Subproblem 2

x + -6.25 = -6.611542936 Simplifying x + -6.25 = -6.611542936 Reorder the terms: -6.25 + x = -6.611542936 Solving -6.25 + x = -6.611542936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = -6.611542936 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = -6.611542936 + 6.25 x = -6.611542936 + 6.25 Combine like terms: -6.611542936 + 6.25 = -0.361542936 x = -0.361542936 Simplifying x = -0.361542936

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.861542936, -0.361542936}

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