3x+46=4x(x+6)

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Solution for 3x+46=4x(x+6) equation:


Simplifying
3x + 46 = 4x(x + 6)

Reorder the terms:
46 + 3x = 4x(x + 6)

Reorder the terms:
46 + 3x = 4x(6 + x)
46 + 3x = (6 * 4x + x * 4x)
46 + 3x = (24x + 4x2)

Solving
46 + 3x = 24x + 4x2

Solving for variable 'x'.

Combine like terms: 3x + -24x = -21x
46 + -21x + -4x2 = 24x + 4x2 + -24x + -4x2

Reorder the terms:
46 + -21x + -4x2 = 24x + -24x + 4x2 + -4x2

Combine like terms: 24x + -24x = 0
46 + -21x + -4x2 = 0 + 4x2 + -4x2
46 + -21x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
46 + -21x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-11.5 + 5.25x + x2 = 0

Move the constant term to the right:

Add '11.5' to each side of the equation.
-11.5 + 5.25x + 11.5 + x2 = 0 + 11.5

Reorder the terms:
-11.5 + 11.5 + 5.25x + x2 = 0 + 11.5

Combine like terms: -11.5 + 11.5 = 0.0
0.0 + 5.25x + x2 = 0 + 11.5
5.25x + x2 = 0 + 11.5

Combine like terms: 0 + 11.5 = 11.5
5.25x + x2 = 11.5

The x term is 5.25x.  Take half its coefficient (2.625).
Square it (6.890625) and add it to both sides.

Add '6.890625' to each side of the equation.
5.25x + 6.890625 + x2 = 11.5 + 6.890625

Reorder the terms:
6.890625 + 5.25x + x2 = 11.5 + 6.890625

Combine like terms: 11.5 + 6.890625 = 18.390625
6.890625 + 5.25x + x2 = 18.390625

Factor a perfect square on the left side:
(x + 2.625)(x + 2.625) = 18.390625

Calculate the square root of the right side: 4.2884292

Break this problem into two subproblems by setting 
(x + 2.625) equal to 4.2884292 and -4.2884292.

Subproblem 1

x + 2.625 = 4.2884292 Simplifying x + 2.625 = 4.2884292 Reorder the terms: 2.625 + x = 4.2884292 Solving 2.625 + x = 4.2884292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.625' to each side of the equation. 2.625 + -2.625 + x = 4.2884292 + -2.625 Combine like terms: 2.625 + -2.625 = 0.000 0.000 + x = 4.2884292 + -2.625 x = 4.2884292 + -2.625 Combine like terms: 4.2884292 + -2.625 = 1.6634292 x = 1.6634292 Simplifying x = 1.6634292

Subproblem 2

x + 2.625 = -4.2884292 Simplifying x + 2.625 = -4.2884292 Reorder the terms: 2.625 + x = -4.2884292 Solving 2.625 + x = -4.2884292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.625' to each side of the equation. 2.625 + -2.625 + x = -4.2884292 + -2.625 Combine like terms: 2.625 + -2.625 = 0.000 0.000 + x = -4.2884292 + -2.625 x = -4.2884292 + -2.625 Combine like terms: -4.2884292 + -2.625 = -6.9134292 x = -6.9134292 Simplifying x = -6.9134292

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.6634292, -6.9134292}

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