(3x^2-5x+13)+(6x-5-6x^2)-(4-5x+10x^2)=

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Solution for (3x^2-5x+13)+(6x-5-6x^2)-(4-5x+10x^2)= equation:


Simplifying
(3x2 + -5x + 13) + (6x + -5 + -6x2) + -1(4 + -5x + 10x2) = 0

Reorder the terms:
(13 + -5x + 3x2) + (6x + -5 + -6x2) + -1(4 + -5x + 10x2) = 0

Remove parenthesis around (13 + -5x + 3x2)
13 + -5x + 3x2 + (6x + -5 + -6x2) + -1(4 + -5x + 10x2) = 0

Reorder the terms:
13 + -5x + 3x2 + (-5 + 6x + -6x2) + -1(4 + -5x + 10x2) = 0

Remove parenthesis around (-5 + 6x + -6x2)
13 + -5x + 3x2 + -5 + 6x + -6x2 + -1(4 + -5x + 10x2) = 0
13 + -5x + 3x2 + -5 + 6x + -6x2 + (4 * -1 + -5x * -1 + 10x2 * -1) = 0
13 + -5x + 3x2 + -5 + 6x + -6x2 + (-4 + 5x + -10x2) = 0

Reorder the terms:
13 + -5 + -4 + -5x + 6x + 5x + 3x2 + -6x2 + -10x2 = 0

Combine like terms: 13 + -5 = 8
8 + -4 + -5x + 6x + 5x + 3x2 + -6x2 + -10x2 = 0

Combine like terms: 8 + -4 = 4
4 + -5x + 6x + 5x + 3x2 + -6x2 + -10x2 = 0

Combine like terms: -5x + 6x = 1x
4 + 1x + 5x + 3x2 + -6x2 + -10x2 = 0

Combine like terms: 1x + 5x = 6x
4 + 6x + 3x2 + -6x2 + -10x2 = 0

Combine like terms: 3x2 + -6x2 = -3x2
4 + 6x + -3x2 + -10x2 = 0

Combine like terms: -3x2 + -10x2 = -13x2
4 + 6x + -13x2 = 0

Solving
4 + 6x + -13x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-13 the coefficient of the squared term: 

Divide each side by '-13'.
-0.3076923077 + -0.4615384615x + x2 = 0

Move the constant term to the right:

Add '0.3076923077' to each side of the equation.
-0.3076923077 + -0.4615384615x + 0.3076923077 + x2 = 0 + 0.3076923077

Reorder the terms:
-0.3076923077 + 0.3076923077 + -0.4615384615x + x2 = 0 + 0.3076923077

Combine like terms: -0.3076923077 + 0.3076923077 = 0.0000000000
0.0000000000 + -0.4615384615x + x2 = 0 + 0.3076923077
-0.4615384615x + x2 = 0 + 0.3076923077

Combine like terms: 0 + 0.3076923077 = 0.3076923077
-0.4615384615x + x2 = 0.3076923077

The x term is -0.4615384615x.  Take half its coefficient (-0.2307692308).
Square it (0.05325443788) and add it to both sides.

Add '0.05325443788' to each side of the equation.
-0.4615384615x + 0.05325443788 + x2 = 0.3076923077 + 0.05325443788

Reorder the terms:
0.05325443788 + -0.4615384615x + x2 = 0.3076923077 + 0.05325443788

Combine like terms: 0.3076923077 + 0.05325443788 = 0.36094674558
0.05325443788 + -0.4615384615x + x2 = 0.36094674558

Factor a perfect square on the left side:
(x + -0.2307692308)(x + -0.2307692308) = 0.36094674558

Calculate the square root of the right side: 0.600788437

Break this problem into two subproblems by setting 
(x + -0.2307692308) equal to 0.600788437 and -0.600788437.

Subproblem 1

x + -0.2307692308 = 0.600788437 Simplifying x + -0.2307692308 = 0.600788437 Reorder the terms: -0.2307692308 + x = 0.600788437 Solving -0.2307692308 + x = 0.600788437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2307692308' to each side of the equation. -0.2307692308 + 0.2307692308 + x = 0.600788437 + 0.2307692308 Combine like terms: -0.2307692308 + 0.2307692308 = 0.0000000000 0.0000000000 + x = 0.600788437 + 0.2307692308 x = 0.600788437 + 0.2307692308 Combine like terms: 0.600788437 + 0.2307692308 = 0.8315576678 x = 0.8315576678 Simplifying x = 0.8315576678

Subproblem 2

x + -0.2307692308 = -0.600788437 Simplifying x + -0.2307692308 = -0.600788437 Reorder the terms: -0.2307692308 + x = -0.600788437 Solving -0.2307692308 + x = -0.600788437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2307692308' to each side of the equation. -0.2307692308 + 0.2307692308 + x = -0.600788437 + 0.2307692308 Combine like terms: -0.2307692308 + 0.2307692308 = 0.0000000000 0.0000000000 + x = -0.600788437 + 0.2307692308 x = -0.600788437 + 0.2307692308 Combine like terms: -0.600788437 + 0.2307692308 = -0.3700192062 x = -0.3700192062 Simplifying x = -0.3700192062

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8315576678, -0.3700192062}

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