10x^2-9x-41=0

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Solution for 10x^2-9x-41=0 equation:


Simplifying
10x2 + -9x + -41 = 0

Reorder the terms:
-41 + -9x + 10x2 = 0

Solving
-41 + -9x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-4.1 + -0.9x + x2 = 0

Move the constant term to the right:

Add '4.1' to each side of the equation.
-4.1 + -0.9x + 4.1 + x2 = 0 + 4.1

Reorder the terms:
-4.1 + 4.1 + -0.9x + x2 = 0 + 4.1

Combine like terms: -4.1 + 4.1 = 0.0
0.0 + -0.9x + x2 = 0 + 4.1
-0.9x + x2 = 0 + 4.1

Combine like terms: 0 + 4.1 = 4.1
-0.9x + x2 = 4.1

The x term is -0.9x.  Take half its coefficient (-0.45).
Square it (0.2025) and add it to both sides.

Add '0.2025' to each side of the equation.
-0.9x + 0.2025 + x2 = 4.1 + 0.2025

Reorder the terms:
0.2025 + -0.9x + x2 = 4.1 + 0.2025

Combine like terms: 4.1 + 0.2025 = 4.3025
0.2025 + -0.9x + x2 = 4.3025

Factor a perfect square on the left side:
(x + -0.45)(x + -0.45) = 4.3025

Calculate the square root of the right side: 2.074246851

Break this problem into two subproblems by setting 
(x + -0.45) equal to 2.074246851 and -2.074246851.

Subproblem 1

x + -0.45 = 2.074246851 Simplifying x + -0.45 = 2.074246851 Reorder the terms: -0.45 + x = 2.074246851 Solving -0.45 + x = 2.074246851 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = 2.074246851 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = 2.074246851 + 0.45 x = 2.074246851 + 0.45 Combine like terms: 2.074246851 + 0.45 = 2.524246851 x = 2.524246851 Simplifying x = 2.524246851

Subproblem 2

x + -0.45 = -2.074246851 Simplifying x + -0.45 = -2.074246851 Reorder the terms: -0.45 + x = -2.074246851 Solving -0.45 + x = -2.074246851 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = -2.074246851 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = -2.074246851 + 0.45 x = -2.074246851 + 0.45 Combine like terms: -2.074246851 + 0.45 = -1.624246851 x = -1.624246851 Simplifying x = -1.624246851

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.524246851, -1.624246851}

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