(x-6)(3x)+5=(x+4)(x)

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Solution for (x-6)(3x)+5=(x+4)(x) equation:


Simplifying
(x + -6)(3x) + 5 = (x + 4)(x)

Reorder the terms:
(-6 + x)(3x) + 5 = (x + 4)(x)

Remove parenthesis around (3x)
(-6 + x) * 3x + 5 = (x + 4)(x)

Reorder the terms for easier multiplication:
3x(-6 + x) + 5 = (x + 4)(x)
(-6 * 3x + x * 3x) + 5 = (x + 4)(x)
(-18x + 3x2) + 5 = (x + 4)(x)

Reorder the terms:
5 + -18x + 3x2 = (x + 4)(x)

Reorder the terms:
5 + -18x + 3x2 = (4 + x)(x)

Reorder the terms for easier multiplication:
5 + -18x + 3x2 = x(4 + x)
5 + -18x + 3x2 = (4 * x + x * x)
5 + -18x + 3x2 = (4x + x2)

Solving
5 + -18x + 3x2 = 4x + x2

Solving for variable 'x'.

Reorder the terms:
5 + -18x + -4x + 3x2 + -1x2 = 4x + x2 + -4x + -1x2

Combine like terms: -18x + -4x = -22x
5 + -22x + 3x2 + -1x2 = 4x + x2 + -4x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
5 + -22x + 2x2 = 4x + x2 + -4x + -1x2

Reorder the terms:
5 + -22x + 2x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
5 + -22x + 2x2 = 0 + x2 + -1x2
5 + -22x + 2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
5 + -22x + 2x2 = 0

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

Divide each side by '2'.
2.5 + -11x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -11x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -11x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -11x + x2 = 0 + -2.5
-11x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-11x + x2 = -2.5

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = -2.5 + 30.25

Reorder the terms:
30.25 + -11x + x2 = -2.5 + 30.25

Combine like terms: -2.5 + 30.25 = 27.75
30.25 + -11x + x2 = 27.75

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 27.75

Calculate the square root of the right side: 5.267826876

Break this problem into two subproblems by setting 
(x + -5.5) equal to 5.267826876 and -5.267826876.

Subproblem 1

x + -5.5 = 5.267826876 Simplifying x + -5.5 = 5.267826876 Reorder the terms: -5.5 + x = 5.267826876 Solving -5.5 + x = 5.267826876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 5.267826876 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.267826876 + 5.5 x = 5.267826876 + 5.5 Combine like terms: 5.267826876 + 5.5 = 10.767826876 x = 10.767826876 Simplifying x = 10.767826876

Subproblem 2

x + -5.5 = -5.267826876 Simplifying x + -5.5 = -5.267826876 Reorder the terms: -5.5 + x = -5.267826876 Solving -5.5 + x = -5.267826876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -5.267826876 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.267826876 + 5.5 x = -5.267826876 + 5.5 Combine like terms: -5.267826876 + 5.5 = 0.232173124 x = 0.232173124 Simplifying x = 0.232173124

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.767826876, 0.232173124}

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