(-9x^2-10x+13)-(12x+23x-1)=

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Solution for (-9x^2-10x+13)-(12x+23x-1)= equation:


Simplifying
(-9x2 + -10x + 13) + -1(12x + 23x + -1) = 0

Reorder the terms:
(13 + -10x + -9x2) + -1(12x + 23x + -1) = 0

Remove parenthesis around (13 + -10x + -9x2)
13 + -10x + -9x2 + -1(12x + 23x + -1) = 0

Reorder the terms:
13 + -10x + -9x2 + -1(-1 + 12x + 23x) = 0

Combine like terms: 12x + 23x = 35x
13 + -10x + -9x2 + -1(-1 + 35x) = 0
13 + -10x + -9x2 + (-1 * -1 + 35x * -1) = 0
13 + -10x + -9x2 + (1 + -35x) = 0

Reorder the terms:
13 + 1 + -10x + -35x + -9x2 = 0

Combine like terms: 13 + 1 = 14
14 + -10x + -35x + -9x2 = 0

Combine like terms: -10x + -35x = -45x
14 + -45x + -9x2 = 0

Solving
14 + -45x + -9x2 = 0

Solving for variable 'x'.

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

Divide each side by '-9'.
-1.555555556 + 5x + x2 = 0

Move the constant term to the right:

Add '1.555555556' to each side of the equation.
-1.555555556 + 5x + 1.555555556 + x2 = 0 + 1.555555556

Reorder the terms:
-1.555555556 + 1.555555556 + 5x + x2 = 0 + 1.555555556

Combine like terms: -1.555555556 + 1.555555556 = 0.000000000
0.000000000 + 5x + x2 = 0 + 1.555555556
5x + x2 = 0 + 1.555555556

Combine like terms: 0 + 1.555555556 = 1.555555556
5x + x2 = 1.555555556

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 1.555555556 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 1.555555556 + 6.25

Combine like terms: 1.555555556 + 6.25 = 7.805555556
6.25 + 5x + x2 = 7.805555556

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 7.805555556

Calculate the square root of the right side: 2.793842436

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.793842436 and -2.793842436.

Subproblem 1

x + 2.5 = 2.793842436 Simplifying x + 2.5 = 2.793842436 Reorder the terms: 2.5 + x = 2.793842436 Solving 2.5 + x = 2.793842436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 2.793842436 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.793842436 + -2.5 x = 2.793842436 + -2.5 Combine like terms: 2.793842436 + -2.5 = 0.293842436 x = 0.293842436 Simplifying x = 0.293842436

Subproblem 2

x + 2.5 = -2.793842436 Simplifying x + 2.5 = -2.793842436 Reorder the terms: 2.5 + x = -2.793842436 Solving 2.5 + x = -2.793842436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -2.793842436 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.793842436 + -2.5 x = -2.793842436 + -2.5 Combine like terms: -2.793842436 + -2.5 = -5.293842436 x = -5.293842436 Simplifying x = -5.293842436

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.293842436, -5.293842436}

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