88+x=3x(x+22)

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Solution for 88+x=3x(x+22) equation:


Simplifying
88 + x = 3x(x + 22)

Reorder the terms:
88 + x = 3x(22 + x)
88 + x = (22 * 3x + x * 3x)
88 + x = (66x + 3x2)

Solving
88 + x = 66x + 3x2

Solving for variable 'x'.

Combine like terms: x + -66x = -65x
88 + -65x + -3x2 = 66x + 3x2 + -66x + -3x2

Reorder the terms:
88 + -65x + -3x2 = 66x + -66x + 3x2 + -3x2

Combine like terms: 66x + -66x = 0
88 + -65x + -3x2 = 0 + 3x2 + -3x2
88 + -65x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
88 + -65x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-29.33333333 + 21.66666667x + x2 = 0

Move the constant term to the right:

Add '29.33333333' to each side of the equation.
-29.33333333 + 21.66666667x + 29.33333333 + x2 = 0 + 29.33333333

Reorder the terms:
-29.33333333 + 29.33333333 + 21.66666667x + x2 = 0 + 29.33333333

Combine like terms: -29.33333333 + 29.33333333 = 0.00000000
0.00000000 + 21.66666667x + x2 = 0 + 29.33333333
21.66666667x + x2 = 0 + 29.33333333

Combine like terms: 0 + 29.33333333 = 29.33333333
21.66666667x + x2 = 29.33333333

The x term is 21.66666667x.  Take half its coefficient (10.83333334).
Square it (117.3611113) and add it to both sides.

Add '117.3611113' to each side of the equation.
21.66666667x + 117.3611113 + x2 = 29.33333333 + 117.3611113

Reorder the terms:
117.3611113 + 21.66666667x + x2 = 29.33333333 + 117.3611113

Combine like terms: 29.33333333 + 117.3611113 = 146.69444463
117.3611113 + 21.66666667x + x2 = 146.69444463

Factor a perfect square on the left side:
(x + 10.83333334)(x + 10.83333334) = 146.69444463

Calculate the square root of the right side: 12.111748207

Break this problem into two subproblems by setting 
(x + 10.83333334) equal to 12.111748207 and -12.111748207.

Subproblem 1

x + 10.83333334 = 12.111748207 Simplifying x + 10.83333334 = 12.111748207 Reorder the terms: 10.83333334 + x = 12.111748207 Solving 10.83333334 + x = 12.111748207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.83333334' to each side of the equation. 10.83333334 + -10.83333334 + x = 12.111748207 + -10.83333334 Combine like terms: 10.83333334 + -10.83333334 = 0.00000000 0.00000000 + x = 12.111748207 + -10.83333334 x = 12.111748207 + -10.83333334 Combine like terms: 12.111748207 + -10.83333334 = 1.278414867 x = 1.278414867 Simplifying x = 1.278414867

Subproblem 2

x + 10.83333334 = -12.111748207 Simplifying x + 10.83333334 = -12.111748207 Reorder the terms: 10.83333334 + x = -12.111748207 Solving 10.83333334 + x = -12.111748207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.83333334' to each side of the equation. 10.83333334 + -10.83333334 + x = -12.111748207 + -10.83333334 Combine like terms: 10.83333334 + -10.83333334 = 0.00000000 0.00000000 + x = -12.111748207 + -10.83333334 x = -12.111748207 + -10.83333334 Combine like terms: -12.111748207 + -10.83333334 = -22.945081547 x = -22.945081547 Simplifying x = -22.945081547

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.278414867, -22.945081547}

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