-2-6x-10x^2=-19x^2

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Solution for -2-6x-10x^2=-19x^2 equation:


Simplifying
-2 + -6x + -10x2 = -19x2

Solving
-2 + -6x + -10x2 = -19x2

Solving for variable 'x'.

Combine like terms: -10x2 + 19x2 = 9x2
-2 + -6x + 9x2 = -19x2 + 19x2

Combine like terms: -19x2 + 19x2 = 0
-2 + -6x + 9x2 = 0

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

Divide each side by '9'.
-0.2222222222 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + -0.6666666667x + 0.2222222222 + x2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + -0.6666666667x + x2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + -0.6666666667x + x2 = 0 + 0.2222222222
-0.6666666667x + x2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
-0.6666666667x + x2 = 0.2222222222

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = 0.2222222222 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 0.2222222222 + 0.1111111112

Combine like terms: 0.2222222222 + 0.1111111112 = 0.3333333334
0.1111111112 + -0.6666666667x + x2 = 0.3333333334

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 0.3333333334

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 0.577350269 and -0.577350269.

Subproblem 1

x + -0.3333333334 = 0.577350269 Simplifying x + -0.3333333334 = 0.577350269 Reorder the terms: -0.3333333334 + x = 0.577350269 Solving -0.3333333334 + x = 0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 0.577350269 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 0.577350269 + 0.3333333334 x = 0.577350269 + 0.3333333334 Combine like terms: 0.577350269 + 0.3333333334 = 0.9106836024 x = 0.9106836024 Simplifying x = 0.9106836024

Subproblem 2

x + -0.3333333334 = -0.577350269 Simplifying x + -0.3333333334 = -0.577350269 Reorder the terms: -0.3333333334 + x = -0.577350269 Solving -0.3333333334 + x = -0.577350269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -0.577350269 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -0.577350269 + 0.3333333334 x = -0.577350269 + 0.3333333334 Combine like terms: -0.577350269 + 0.3333333334 = -0.2440169356 x = -0.2440169356 Simplifying x = -0.2440169356

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9106836024, -0.2440169356}

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