3x-14+2x(x-9)=2x-2

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Solution for 3x-14+2x(x-9)=2x-2 equation:


Simplifying
3x + -14 + 2x(x + -9) = 2x + -2

Reorder the terms:
3x + -14 + 2x(-9 + x) = 2x + -2
3x + -14 + (-9 * 2x + x * 2x) = 2x + -2
3x + -14 + (-18x + 2x2) = 2x + -2

Reorder the terms:
-14 + 3x + -18x + 2x2 = 2x + -2

Combine like terms: 3x + -18x = -15x
-14 + -15x + 2x2 = 2x + -2

Reorder the terms:
-14 + -15x + 2x2 = -2 + 2x

Solving
-14 + -15x + 2x2 = -2 + 2x

Solving for variable 'x'.

Reorder the terms:
-14 + 2 + -15x + -2x + 2x2 = -2 + 2x + 2 + -2x

Combine like terms: -14 + 2 = -12
-12 + -15x + -2x + 2x2 = -2 + 2x + 2 + -2x

Combine like terms: -15x + -2x = -17x
-12 + -17x + 2x2 = -2 + 2x + 2 + -2x

Reorder the terms:
-12 + -17x + 2x2 = -2 + 2 + 2x + -2x

Combine like terms: -2 + 2 = 0
-12 + -17x + 2x2 = 0 + 2x + -2x
-12 + -17x + 2x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-12 + -17x + 2x2 = 0

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

Divide each side by '2'.
-6 + -8.5x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -8.5x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -8.5x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -8.5x + x2 = 0 + 6
-8.5x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-8.5x + x2 = 6

The x term is -8.5x.  Take half its coefficient (-4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
-8.5x + 18.0625 + x2 = 6 + 18.0625

Reorder the terms:
18.0625 + -8.5x + x2 = 6 + 18.0625

Combine like terms: 6 + 18.0625 = 24.0625
18.0625 + -8.5x + x2 = 24.0625

Factor a perfect square on the left side:
(x + -4.25)(x + -4.25) = 24.0625

Calculate the square root of the right side: 4.905354218

Break this problem into two subproblems by setting 
(x + -4.25) equal to 4.905354218 and -4.905354218.

Subproblem 1

x + -4.25 = 4.905354218 Simplifying x + -4.25 = 4.905354218 Reorder the terms: -4.25 + x = 4.905354218 Solving -4.25 + x = 4.905354218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = 4.905354218 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = 4.905354218 + 4.25 x = 4.905354218 + 4.25 Combine like terms: 4.905354218 + 4.25 = 9.155354218 x = 9.155354218 Simplifying x = 9.155354218

Subproblem 2

x + -4.25 = -4.905354218 Simplifying x + -4.25 = -4.905354218 Reorder the terms: -4.25 + x = -4.905354218 Solving -4.25 + x = -4.905354218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = -4.905354218 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = -4.905354218 + 4.25 x = -4.905354218 + 4.25 Combine like terms: -4.905354218 + 4.25 = -0.655354218 x = -0.655354218 Simplifying x = -0.655354218

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.155354218, -0.655354218}

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