(8x+x^2-6)-(10x+7-2x^2)=

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Solution for (8x+x^2-6)-(10x+7-2x^2)= equation:


Simplifying
(8x + x2 + -6) + -1(10x + 7 + -2x2) = 0

Reorder the terms:
(-6 + 8x + x2) + -1(10x + 7 + -2x2) = 0

Remove parenthesis around (-6 + 8x + x2)
-6 + 8x + x2 + -1(10x + 7 + -2x2) = 0

Reorder the terms:
-6 + 8x + x2 + -1(7 + 10x + -2x2) = 0
-6 + 8x + x2 + (7 * -1 + 10x * -1 + -2x2 * -1) = 0
-6 + 8x + x2 + (-7 + -10x + 2x2) = 0

Reorder the terms:
-6 + -7 + 8x + -10x + x2 + 2x2 = 0

Combine like terms: -6 + -7 = -13
-13 + 8x + -10x + x2 + 2x2 = 0

Combine like terms: 8x + -10x = -2x
-13 + -2x + x2 + 2x2 = 0

Combine like terms: x2 + 2x2 = 3x2
-13 + -2x + 3x2 = 0

Solving
-13 + -2x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-4.333333333 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '4.333333333' to each side of the equation.
-4.333333333 + -0.6666666667x + 4.333333333 + x2 = 0 + 4.333333333

Reorder the terms:
-4.333333333 + 4.333333333 + -0.6666666667x + x2 = 0 + 4.333333333

Combine like terms: -4.333333333 + 4.333333333 = 0.000000000
0.000000000 + -0.6666666667x + x2 = 0 + 4.333333333
-0.6666666667x + x2 = 0 + 4.333333333

Combine like terms: 0 + 4.333333333 = 4.333333333
-0.6666666667x + x2 = 4.333333333

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 = 4.333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 4.333333333 + 0.1111111112

Combine like terms: 4.333333333 + 0.1111111112 = 4.4444444442
0.1111111112 + -0.6666666667x + x2 = 4.4444444442

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 4.4444444442

Calculate the square root of the right side: 2.108185107

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 2.108185107 and -2.108185107.

Subproblem 1

x + -0.3333333334 = 2.108185107 Simplifying x + -0.3333333334 = 2.108185107 Reorder the terms: -0.3333333334 + x = 2.108185107 Solving -0.3333333334 + x = 2.108185107 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 = 2.108185107 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 2.108185107 + 0.3333333334 x = 2.108185107 + 0.3333333334 Combine like terms: 2.108185107 + 0.3333333334 = 2.4415184404 x = 2.4415184404 Simplifying x = 2.4415184404

Subproblem 2

x + -0.3333333334 = -2.108185107 Simplifying x + -0.3333333334 = -2.108185107 Reorder the terms: -0.3333333334 + x = -2.108185107 Solving -0.3333333334 + x = -2.108185107 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 = -2.108185107 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -2.108185107 + 0.3333333334 x = -2.108185107 + 0.3333333334 Combine like terms: -2.108185107 + 0.3333333334 = -1.7748517736 x = -1.7748517736 Simplifying x = -1.7748517736

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.4415184404, -1.7748517736}

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