5x^2-10x-246=0

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Solution for 5x^2-10x-246=0 equation:


Simplifying
5x2 + -10x + -246 = 0

Reorder the terms:
-246 + -10x + 5x2 = 0

Solving
-246 + -10x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-49.2 + -2x + x2 = 0

Move the constant term to the right:

Add '49.2' to each side of the equation.
-49.2 + -2x + 49.2 + x2 = 0 + 49.2

Reorder the terms:
-49.2 + 49.2 + -2x + x2 = 0 + 49.2

Combine like terms: -49.2 + 49.2 = 0.0
0.0 + -2x + x2 = 0 + 49.2
-2x + x2 = 0 + 49.2

Combine like terms: 0 + 49.2 = 49.2
-2x + x2 = 49.2

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 49.2 + 1

Reorder the terms:
1 + -2x + x2 = 49.2 + 1

Combine like terms: 49.2 + 1 = 50.2
1 + -2x + x2 = 50.2

Factor a perfect square on the left side:
(x + -1)(x + -1) = 50.2

Calculate the square root of the right side: 7.085195834

Break this problem into two subproblems by setting 
(x + -1) equal to 7.085195834 and -7.085195834.

Subproblem 1

x + -1 = 7.085195834 Simplifying x + -1 = 7.085195834 Reorder the terms: -1 + x = 7.085195834 Solving -1 + x = 7.085195834 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 7.085195834 + 1 Combine like terms: -1 + 1 = 0 0 + x = 7.085195834 + 1 x = 7.085195834 + 1 Combine like terms: 7.085195834 + 1 = 8.085195834 x = 8.085195834 Simplifying x = 8.085195834

Subproblem 2

x + -1 = -7.085195834 Simplifying x + -1 = -7.085195834 Reorder the terms: -1 + x = -7.085195834 Solving -1 + x = -7.085195834 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -7.085195834 + 1 Combine like terms: -1 + 1 = 0 0 + x = -7.085195834 + 1 x = -7.085195834 + 1 Combine like terms: -7.085195834 + 1 = -6.085195834 x = -6.085195834 Simplifying x = -6.085195834

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.085195834, -6.085195834}

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