6x^2+7x+2-5x-4+1x^2=

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Solution for 6x^2+7x+2-5x-4+1x^2= equation:


Simplifying
6x2 + 7x + 2 + -5x + -4 + 1x2 = 0

Reorder the terms:
2 + -4 + 7x + -5x + 6x2 + 1x2 = 0

Combine like terms: 2 + -4 = -2
-2 + 7x + -5x + 6x2 + 1x2 = 0

Combine like terms: 7x + -5x = 2x
-2 + 2x + 6x2 + 1x2 = 0

Combine like terms: 6x2 + 1x2 = 7x2
-2 + 2x + 7x2 = 0

Solving
-2 + 2x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-0.2857142857 + 0.2857142857x + x2 = 0

Move the constant term to the right:

Add '0.2857142857' to each side of the equation.
-0.2857142857 + 0.2857142857x + 0.2857142857 + x2 = 0 + 0.2857142857

Reorder the terms:
-0.2857142857 + 0.2857142857 + 0.2857142857x + x2 = 0 + 0.2857142857

Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000
0.0000000000 + 0.2857142857x + x2 = 0 + 0.2857142857
0.2857142857x + x2 = 0 + 0.2857142857

Combine like terms: 0 + 0.2857142857 = 0.2857142857
0.2857142857x + x2 = 0.2857142857

The x term is 0.2857142857x.  Take half its coefficient (0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
0.2857142857x + 0.02040816328 + x2 = 0.2857142857 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857x + x2 = 0.2857142857 + 0.02040816328

Combine like terms: 0.2857142857 + 0.02040816328 = 0.30612244898
0.02040816328 + 0.2857142857x + x2 = 0.30612244898

Factor a perfect square on the left side:
(x + 0.1428571429)(x + 0.1428571429) = 0.30612244898

Calculate the square root of the right side: 0.553283335

Break this problem into two subproblems by setting 
(x + 0.1428571429) equal to 0.553283335 and -0.553283335.

Subproblem 1

x + 0.1428571429 = 0.553283335 Simplifying x + 0.1428571429 = 0.553283335 Reorder the terms: 0.1428571429 + x = 0.553283335 Solving 0.1428571429 + x = 0.553283335 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + x = 0.553283335 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + x = 0.553283335 + -0.1428571429 x = 0.553283335 + -0.1428571429 Combine like terms: 0.553283335 + -0.1428571429 = 0.4104261921 x = 0.4104261921 Simplifying x = 0.4104261921

Subproblem 2

x + 0.1428571429 = -0.553283335 Simplifying x + 0.1428571429 = -0.553283335 Reorder the terms: 0.1428571429 + x = -0.553283335 Solving 0.1428571429 + x = -0.553283335 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + x = -0.553283335 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + x = -0.553283335 + -0.1428571429 x = -0.553283335 + -0.1428571429 Combine like terms: -0.553283335 + -0.1428571429 = -0.6961404779 x = -0.6961404779 Simplifying x = -0.6961404779

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4104261921, -0.6961404779}

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