-13x-5x(x)=-50

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Solution for -13x-5x(x)=-50 equation:


Simplifying
-13x + -5x(x) = -50

Multiply x * x
-13x + -5x2 = -50

Solving
-13x + -5x2 = -50

Solving for variable 'x'.

Reorder the terms:
50 + -13x + -5x2 = -50 + 50

Combine like terms: -50 + 50 = 0
50 + -13x + -5x2 = 0

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

Divide each side by '-5'.
-10 + 2.6x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 2.6x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 2.6x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 2.6x + x2 = 0 + 10
2.6x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
2.6x + x2 = 10

The x term is 2.6x.  Take half its coefficient (1.3).
Square it (1.69) and add it to both sides.

Add '1.69' to each side of the equation.
2.6x + 1.69 + x2 = 10 + 1.69

Reorder the terms:
1.69 + 2.6x + x2 = 10 + 1.69

Combine like terms: 10 + 1.69 = 11.69
1.69 + 2.6x + x2 = 11.69

Factor a perfect square on the left side:
(x + 1.3)(x + 1.3) = 11.69

Calculate the square root of the right side: 3.419064199

Break this problem into two subproblems by setting 
(x + 1.3) equal to 3.419064199 and -3.419064199.

Subproblem 1

x + 1.3 = 3.419064199 Simplifying x + 1.3 = 3.419064199 Reorder the terms: 1.3 + x = 3.419064199 Solving 1.3 + x = 3.419064199 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + x = 3.419064199 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + x = 3.419064199 + -1.3 x = 3.419064199 + -1.3 Combine like terms: 3.419064199 + -1.3 = 2.119064199 x = 2.119064199 Simplifying x = 2.119064199

Subproblem 2

x + 1.3 = -3.419064199 Simplifying x + 1.3 = -3.419064199 Reorder the terms: 1.3 + x = -3.419064199 Solving 1.3 + x = -3.419064199 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + x = -3.419064199 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + x = -3.419064199 + -1.3 x = -3.419064199 + -1.3 Combine like terms: -3.419064199 + -1.3 = -4.719064199 x = -4.719064199 Simplifying x = -4.719064199

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.119064199, -4.719064199}

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