2x^2=-10.7x-9.2

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Solution for 2x^2=-10.7x-9.2 equation:


Simplifying
2x2 = -10.7x + -9.2

Reorder the terms:
2x2 = -9.2 + -10.7x

Solving
2x2 = -9.2 + -10.7x

Solving for variable 'x'.

Reorder the terms:
9.2 + 10.7x + 2x2 = -9.2 + -10.7x + 9.2 + 10.7x

Reorder the terms:
9.2 + 10.7x + 2x2 = -9.2 + 9.2 + -10.7x + 10.7x

Combine like terms: -9.2 + 9.2 = 0.0
9.2 + 10.7x + 2x2 = 0.0 + -10.7x + 10.7x
9.2 + 10.7x + 2x2 = -10.7x + 10.7x

Combine like terms: -10.7x + 10.7x = 0.0
9.2 + 10.7x + 2x2 = 0.0

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

Divide each side by '2'.
4.6 + 5.35x + x2 = 0.0

Move the constant term to the right:

Add '-4.6' to each side of the equation.
4.6 + 5.35x + -4.6 + x2 = 0.0 + -4.6

Reorder the terms:
4.6 + -4.6 + 5.35x + x2 = 0.0 + -4.6

Combine like terms: 4.6 + -4.6 = 0.0
0.0 + 5.35x + x2 = 0.0 + -4.6
5.35x + x2 = 0.0 + -4.6

Combine like terms: 0.0 + -4.6 = -4.6
5.35x + x2 = -4.6

The x term is 5.35x.  Take half its coefficient (2.675).
Square it (7.155625) and add it to both sides.

Add '7.155625' to each side of the equation.
5.35x + 7.155625 + x2 = -4.6 + 7.155625

Reorder the terms:
7.155625 + 5.35x + x2 = -4.6 + 7.155625

Combine like terms: -4.6 + 7.155625 = 2.555625
7.155625 + 5.35x + x2 = 2.555625

Factor a perfect square on the left side:
(x + 2.675)(x + 2.675) = 2.555625

Calculate the square root of the right side: 1.598632228

Break this problem into two subproblems by setting 
(x + 2.675) equal to 1.598632228 and -1.598632228.

Subproblem 1

x + 2.675 = 1.598632228 Simplifying x + 2.675 = 1.598632228 Reorder the terms: 2.675 + x = 1.598632228 Solving 2.675 + x = 1.598632228 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.675' to each side of the equation. 2.675 + -2.675 + x = 1.598632228 + -2.675 Combine like terms: 2.675 + -2.675 = 0.000 0.000 + x = 1.598632228 + -2.675 x = 1.598632228 + -2.675 Combine like terms: 1.598632228 + -2.675 = -1.076367772 x = -1.076367772 Simplifying x = -1.076367772

Subproblem 2

x + 2.675 = -1.598632228 Simplifying x + 2.675 = -1.598632228 Reorder the terms: 2.675 + x = -1.598632228 Solving 2.675 + x = -1.598632228 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.675' to each side of the equation. 2.675 + -2.675 + x = -1.598632228 + -2.675 Combine like terms: 2.675 + -2.675 = 0.000 0.000 + x = -1.598632228 + -2.675 x = -1.598632228 + -2.675 Combine like terms: -1.598632228 + -2.675 = -4.273632228 x = -4.273632228 Simplifying x = -4.273632228

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.076367772, -4.273632228}

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