9x^2-41x-92=0

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Solution for 9x^2-41x-92=0 equation:


Simplifying
9x2 + -41x + -92 = 0

Reorder the terms:
-92 + -41x + 9x2 = 0

Solving
-92 + -41x + 9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
-10.22222222 + -4.555555556x + x2 = 0

Move the constant term to the right:

Add '10.22222222' to each side of the equation.
-10.22222222 + -4.555555556x + 10.22222222 + x2 = 0 + 10.22222222

Reorder the terms:
-10.22222222 + 10.22222222 + -4.555555556x + x2 = 0 + 10.22222222

Combine like terms: -10.22222222 + 10.22222222 = 0.00000000
0.00000000 + -4.555555556x + x2 = 0 + 10.22222222
-4.555555556x + x2 = 0 + 10.22222222

Combine like terms: 0 + 10.22222222 = 10.22222222
-4.555555556x + x2 = 10.22222222

The x term is -4.555555556x.  Take half its coefficient (-2.277777778).
Square it (5.188271606) and add it to both sides.

Add '5.188271606' to each side of the equation.
-4.555555556x + 5.188271606 + x2 = 10.22222222 + 5.188271606

Reorder the terms:
5.188271606 + -4.555555556x + x2 = 10.22222222 + 5.188271606

Combine like terms: 10.22222222 + 5.188271606 = 15.410493826
5.188271606 + -4.555555556x + x2 = 15.410493826

Factor a perfect square on the left side:
(x + -2.277777778)(x + -2.277777778) = 15.410493826

Calculate the square root of the right side: 3.925620184

Break this problem into two subproblems by setting 
(x + -2.277777778) equal to 3.925620184 and -3.925620184.

Subproblem 1

x + -2.277777778 = 3.925620184 Simplifying x + -2.277777778 = 3.925620184 Reorder the terms: -2.277777778 + x = 3.925620184 Solving -2.277777778 + x = 3.925620184 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.277777778' to each side of the equation. -2.277777778 + 2.277777778 + x = 3.925620184 + 2.277777778 Combine like terms: -2.277777778 + 2.277777778 = 0.000000000 0.000000000 + x = 3.925620184 + 2.277777778 x = 3.925620184 + 2.277777778 Combine like terms: 3.925620184 + 2.277777778 = 6.203397962 x = 6.203397962 Simplifying x = 6.203397962

Subproblem 2

x + -2.277777778 = -3.925620184 Simplifying x + -2.277777778 = -3.925620184 Reorder the terms: -2.277777778 + x = -3.925620184 Solving -2.277777778 + x = -3.925620184 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.277777778' to each side of the equation. -2.277777778 + 2.277777778 + x = -3.925620184 + 2.277777778 Combine like terms: -2.277777778 + 2.277777778 = 0.000000000 0.000000000 + x = -3.925620184 + 2.277777778 x = -3.925620184 + 2.277777778 Combine like terms: -3.925620184 + 2.277777778 = -1.647842406 x = -1.647842406 Simplifying x = -1.647842406

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.203397962, -1.647842406}

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