10x^2-19x-139=0

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Solution for 10x^2-19x-139=0 equation:


Simplifying
10x2 + -19x + -139 = 0

Reorder the terms:
-139 + -19x + 10x2 = 0

Solving
-139 + -19x + 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'.
-13.9 + -1.9x + x2 = 0

Move the constant term to the right:

Add '13.9' to each side of the equation.
-13.9 + -1.9x + 13.9 + x2 = 0 + 13.9

Reorder the terms:
-13.9 + 13.9 + -1.9x + x2 = 0 + 13.9

Combine like terms: -13.9 + 13.9 = 0.0
0.0 + -1.9x + x2 = 0 + 13.9
-1.9x + x2 = 0 + 13.9

Combine like terms: 0 + 13.9 = 13.9
-1.9x + x2 = 13.9

The x term is -1.9x.  Take half its coefficient (-0.95).
Square it (0.9025) and add it to both sides.

Add '0.9025' to each side of the equation.
-1.9x + 0.9025 + x2 = 13.9 + 0.9025

Reorder the terms:
0.9025 + -1.9x + x2 = 13.9 + 0.9025

Combine like terms: 13.9 + 0.9025 = 14.8025
0.9025 + -1.9x + x2 = 14.8025

Factor a perfect square on the left side:
(x + -0.95)(x + -0.95) = 14.8025

Calculate the square root of the right side: 3.847401721

Break this problem into two subproblems by setting 
(x + -0.95) equal to 3.847401721 and -3.847401721.

Subproblem 1

x + -0.95 = 3.847401721 Simplifying x + -0.95 = 3.847401721 Reorder the terms: -0.95 + x = 3.847401721 Solving -0.95 + x = 3.847401721 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.95' to each side of the equation. -0.95 + 0.95 + x = 3.847401721 + 0.95 Combine like terms: -0.95 + 0.95 = 0.00 0.00 + x = 3.847401721 + 0.95 x = 3.847401721 + 0.95 Combine like terms: 3.847401721 + 0.95 = 4.797401721 x = 4.797401721 Simplifying x = 4.797401721

Subproblem 2

x + -0.95 = -3.847401721 Simplifying x + -0.95 = -3.847401721 Reorder the terms: -0.95 + x = -3.847401721 Solving -0.95 + x = -3.847401721 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.95' to each side of the equation. -0.95 + 0.95 + x = -3.847401721 + 0.95 Combine like terms: -0.95 + 0.95 = 0.00 0.00 + x = -3.847401721 + 0.95 x = -3.847401721 + 0.95 Combine like terms: -3.847401721 + 0.95 = -2.897401721 x = -2.897401721 Simplifying x = -2.897401721

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.797401721, -2.897401721}

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