x^2-3x-92=0

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Solution for x^2-3x-92=0 equation:


Simplifying
x2 + -3x + -92 = 0

Reorder the terms:
-92 + -3x + x2 = 0

Solving
-92 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '92' to each side of the equation.
-92 + -3x + 92 + x2 = 0 + 92

Reorder the terms:
-92 + 92 + -3x + x2 = 0 + 92

Combine like terms: -92 + 92 = 0
0 + -3x + x2 = 0 + 92
-3x + x2 = 0 + 92

Combine like terms: 0 + 92 = 92
-3x + x2 = 92

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 92 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 92 + 2.25

Combine like terms: 92 + 2.25 = 94.25
2.25 + -3x + x2 = 94.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 94.25

Calculate the square root of the right side: 9.708243919

Break this problem into two subproblems by setting 
(x + -1.5) equal to 9.708243919 and -9.708243919.

Subproblem 1

x + -1.5 = 9.708243919 Simplifying x + -1.5 = 9.708243919 Reorder the terms: -1.5 + x = 9.708243919 Solving -1.5 + x = 9.708243919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 9.708243919 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 9.708243919 + 1.5 x = 9.708243919 + 1.5 Combine like terms: 9.708243919 + 1.5 = 11.208243919 x = 11.208243919 Simplifying x = 11.208243919

Subproblem 2

x + -1.5 = -9.708243919 Simplifying x + -1.5 = -9.708243919 Reorder the terms: -1.5 + x = -9.708243919 Solving -1.5 + x = -9.708243919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -9.708243919 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -9.708243919 + 1.5 x = -9.708243919 + 1.5 Combine like terms: -9.708243919 + 1.5 = -8.208243919 x = -8.208243919 Simplifying x = -8.208243919

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.208243919, -8.208243919}

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