x^2+39x-50=0

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Solution for x^2+39x-50=0 equation:


Simplifying
x2 + 39x + -50 = 0

Reorder the terms:
-50 + 39x + x2 = 0

Solving
-50 + 39x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + 39x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + 39x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 39x + x2 = 0 + 50
39x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
39x + x2 = 50

The x term is 39x.  Take half its coefficient (19.5).
Square it (380.25) and add it to both sides.

Add '380.25' to each side of the equation.
39x + 380.25 + x2 = 50 + 380.25

Reorder the terms:
380.25 + 39x + x2 = 50 + 380.25

Combine like terms: 50 + 380.25 = 430.25
380.25 + 39x + x2 = 430.25

Factor a perfect square on the left side:
(x + 19.5)(x + 19.5) = 430.25

Calculate the square root of the right side: 20.742468513

Break this problem into two subproblems by setting 
(x + 19.5) equal to 20.742468513 and -20.742468513.

Subproblem 1

x + 19.5 = 20.742468513 Simplifying x + 19.5 = 20.742468513 Reorder the terms: 19.5 + x = 20.742468513 Solving 19.5 + x = 20.742468513 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19.5' to each side of the equation. 19.5 + -19.5 + x = 20.742468513 + -19.5 Combine like terms: 19.5 + -19.5 = 0.0 0.0 + x = 20.742468513 + -19.5 x = 20.742468513 + -19.5 Combine like terms: 20.742468513 + -19.5 = 1.242468513 x = 1.242468513 Simplifying x = 1.242468513

Subproblem 2

x + 19.5 = -20.742468513 Simplifying x + 19.5 = -20.742468513 Reorder the terms: 19.5 + x = -20.742468513 Solving 19.5 + x = -20.742468513 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19.5' to each side of the equation. 19.5 + -19.5 + x = -20.742468513 + -19.5 Combine like terms: 19.5 + -19.5 = 0.0 0.0 + x = -20.742468513 + -19.5 x = -20.742468513 + -19.5 Combine like terms: -20.742468513 + -19.5 = -40.242468513 x = -40.242468513 Simplifying x = -40.242468513

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.242468513, -40.242468513}

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