x(x-4)-14=130-2x

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Solution for x(x-4)-14=130-2x equation:


Simplifying
x(x + -4) + -14 = 130 + -2x

Reorder the terms:
x(-4 + x) + -14 = 130 + -2x
(-4 * x + x * x) + -14 = 130 + -2x
(-4x + x2) + -14 = 130 + -2x

Reorder the terms:
-14 + -4x + x2 = 130 + -2x

Solving
-14 + -4x + x2 = 130 + -2x

Solving for variable 'x'.

Reorder the terms:
-14 + -130 + -4x + 2x + x2 = 130 + -2x + -130 + 2x

Combine like terms: -14 + -130 = -144
-144 + -4x + 2x + x2 = 130 + -2x + -130 + 2x

Combine like terms: -4x + 2x = -2x
-144 + -2x + x2 = 130 + -2x + -130 + 2x

Reorder the terms:
-144 + -2x + x2 = 130 + -130 + -2x + 2x

Combine like terms: 130 + -130 = 0
-144 + -2x + x2 = 0 + -2x + 2x
-144 + -2x + x2 = -2x + 2x

Combine like terms: -2x + 2x = 0
-144 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '144' to each side of the equation.
-144 + -2x + 144 + x2 = 0 + 144

Reorder the terms:
-144 + 144 + -2x + x2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + -2x + x2 = 0 + 144
-2x + x2 = 0 + 144

Combine like terms: 0 + 144 = 144
-2x + x2 = 144

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 144 + 1

Reorder the terms:
1 + -2x + x2 = 144 + 1

Combine like terms: 144 + 1 = 145
1 + -2x + x2 = 145

Factor a perfect square on the left side:
(x + -1)(x + -1) = 145

Calculate the square root of the right side: 12.041594579

Break this problem into two subproblems by setting 
(x + -1) equal to 12.041594579 and -12.041594579.

Subproblem 1

x + -1 = 12.041594579 Simplifying x + -1 = 12.041594579 Reorder the terms: -1 + x = 12.041594579 Solving -1 + x = 12.041594579 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 12.041594579 + 1 Combine like terms: -1 + 1 = 0 0 + x = 12.041594579 + 1 x = 12.041594579 + 1 Combine like terms: 12.041594579 + 1 = 13.041594579 x = 13.041594579 Simplifying x = 13.041594579

Subproblem 2

x + -1 = -12.041594579 Simplifying x + -1 = -12.041594579 Reorder the terms: -1 + x = -12.041594579 Solving -1 + x = -12.041594579 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -12.041594579 + 1 Combine like terms: -1 + 1 = 0 0 + x = -12.041594579 + 1 x = -12.041594579 + 1 Combine like terms: -12.041594579 + 1 = -11.041594579 x = -11.041594579 Simplifying x = -11.041594579

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.041594579, -11.041594579}

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