2x^2+x-92=0

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Solution for 2x^2+x-92=0 equation:


Simplifying
2x2 + x + -92 = 0

Reorder the terms:
-92 + x + 2x2 = 0

Solving
-92 + x + 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'.
-46 + 0.5x + x2 = 0

Move the constant term to the right:

Add '46' to each side of the equation.
-46 + 0.5x + 46 + x2 = 0 + 46

Reorder the terms:
-46 + 46 + 0.5x + x2 = 0 + 46

Combine like terms: -46 + 46 = 0
0 + 0.5x + x2 = 0 + 46
0.5x + x2 = 0 + 46

Combine like terms: 0 + 46 = 46
0.5x + x2 = 46

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5x + 0.25 + x2 = 46 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = 46 + 0.25

Combine like terms: 46 + 0.25 = 46.25
0.25 + 0.5x + x2 = 46.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 46.25

Calculate the square root of the right side: 6.800735254

Break this problem into two subproblems by setting 
(x + 0.5) equal to 6.800735254 and -6.800735254.

Subproblem 1

x + 0.5 = 6.800735254 Simplifying x + 0.5 = 6.800735254 Reorder the terms: 0.5 + x = 6.800735254 Solving 0.5 + x = 6.800735254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 6.800735254 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 6.800735254 + -0.5 x = 6.800735254 + -0.5 Combine like terms: 6.800735254 + -0.5 = 6.300735254 x = 6.300735254 Simplifying x = 6.300735254

Subproblem 2

x + 0.5 = -6.800735254 Simplifying x + 0.5 = -6.800735254 Reorder the terms: 0.5 + x = -6.800735254 Solving 0.5 + x = -6.800735254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -6.800735254 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -6.800735254 + -0.5 x = -6.800735254 + -0.5 Combine like terms: -6.800735254 + -0.5 = -7.300735254 x = -7.300735254 Simplifying x = -7.300735254

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.300735254, -7.300735254}

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