x^2+4x+9=2x^2-6x+14

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Solution for x^2+4x+9=2x^2-6x+14 equation:


Simplifying
x2 + 4x + 9 = 2x2 + -6x + 14

Reorder the terms:
9 + 4x + x2 = 2x2 + -6x + 14

Reorder the terms:
9 + 4x + x2 = 14 + -6x + 2x2

Solving
9 + 4x + x2 = 14 + -6x + 2x2

Solving for variable 'x'.

Reorder the terms:
9 + -14 + 4x + 6x + x2 + -2x2 = 14 + -6x + 2x2 + -14 + 6x + -2x2

Combine like terms: 9 + -14 = -5
-5 + 4x + 6x + x2 + -2x2 = 14 + -6x + 2x2 + -14 + 6x + -2x2

Combine like terms: 4x + 6x = 10x
-5 + 10x + x2 + -2x2 = 14 + -6x + 2x2 + -14 + 6x + -2x2

Combine like terms: x2 + -2x2 = -1x2
-5 + 10x + -1x2 = 14 + -6x + 2x2 + -14 + 6x + -2x2

Reorder the terms:
-5 + 10x + -1x2 = 14 + -14 + -6x + 6x + 2x2 + -2x2

Combine like terms: 14 + -14 = 0
-5 + 10x + -1x2 = 0 + -6x + 6x + 2x2 + -2x2
-5 + 10x + -1x2 = -6x + 6x + 2x2 + -2x2

Combine like terms: -6x + 6x = 0
-5 + 10x + -1x2 = 0 + 2x2 + -2x2
-5 + 10x + -1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-5 + 10x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
5 + -10x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -10x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -10x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -10x + x2 = 0 + -5
-10x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-10x + x2 = -5

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -5 + 25

Reorder the terms:
25 + -10x + x2 = -5 + 25

Combine like terms: -5 + 25 = 20
25 + -10x + x2 = 20

Factor a perfect square on the left side:
(x + -5)(x + -5) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(x + -5) equal to 4.472135955 and -4.472135955.

Subproblem 1

x + -5 = 4.472135955 Simplifying x + -5 = 4.472135955 Reorder the terms: -5 + x = 4.472135955 Solving -5 + x = 4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 4.472135955 + 5 Combine like terms: -5 + 5 = 0 0 + x = 4.472135955 + 5 x = 4.472135955 + 5 Combine like terms: 4.472135955 + 5 = 9.472135955 x = 9.472135955 Simplifying x = 9.472135955

Subproblem 2

x + -5 = -4.472135955 Simplifying x + -5 = -4.472135955 Reorder the terms: -5 + x = -4.472135955 Solving -5 + x = -4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -4.472135955 + 5 Combine like terms: -5 + 5 = 0 0 + x = -4.472135955 + 5 x = -4.472135955 + 5 Combine like terms: -4.472135955 + 5 = 0.527864045 x = 0.527864045 Simplifying x = 0.527864045

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.472135955, 0.527864045}

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