3x(22-2x)=5x+32

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Solution for 3x(22-2x)=5x+32 equation:


Simplifying
3x(22 + -2x) = 5x + 32
(22 * 3x + -2x * 3x) = 5x + 32
(66x + -6x2) = 5x + 32

Reorder the terms:
66x + -6x2 = 32 + 5x

Solving
66x + -6x2 = 32 + 5x

Solving for variable 'x'.

Reorder the terms:
-32 + 66x + -5x + -6x2 = 32 + 5x + -32 + -5x

Combine like terms: 66x + -5x = 61x
-32 + 61x + -6x2 = 32 + 5x + -32 + -5x

Reorder the terms:
-32 + 61x + -6x2 = 32 + -32 + 5x + -5x

Combine like terms: 32 + -32 = 0
-32 + 61x + -6x2 = 0 + 5x + -5x
-32 + 61x + -6x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-32 + 61x + -6x2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
5.333333333 + -10.16666667x + x2 = 0

Move the constant term to the right:

Add '-5.333333333' to each side of the equation.
5.333333333 + -10.16666667x + -5.333333333 + x2 = 0 + -5.333333333

Reorder the terms:
5.333333333 + -5.333333333 + -10.16666667x + x2 = 0 + -5.333333333

Combine like terms: 5.333333333 + -5.333333333 = 0.000000000
0.000000000 + -10.16666667x + x2 = 0 + -5.333333333
-10.16666667x + x2 = 0 + -5.333333333

Combine like terms: 0 + -5.333333333 = -5.333333333
-10.16666667x + x2 = -5.333333333

The x term is -10.16666667x.  Take half its coefficient (-5.083333335).
Square it (25.84027779) and add it to both sides.

Add '25.84027779' to each side of the equation.
-10.16666667x + 25.84027779 + x2 = -5.333333333 + 25.84027779

Reorder the terms:
25.84027779 + -10.16666667x + x2 = -5.333333333 + 25.84027779

Combine like terms: -5.333333333 + 25.84027779 = 20.506944457
25.84027779 + -10.16666667x + x2 = 20.506944457

Factor a perfect square on the left side:
(x + -5.083333335)(x + -5.083333335) = 20.506944457

Calculate the square root of the right side: 4.528459391

Break this problem into two subproblems by setting 
(x + -5.083333335) equal to 4.528459391 and -4.528459391.

Subproblem 1

x + -5.083333335 = 4.528459391 Simplifying x + -5.083333335 = 4.528459391 Reorder the terms: -5.083333335 + x = 4.528459391 Solving -5.083333335 + x = 4.528459391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.083333335' to each side of the equation. -5.083333335 + 5.083333335 + x = 4.528459391 + 5.083333335 Combine like terms: -5.083333335 + 5.083333335 = 0.000000000 0.000000000 + x = 4.528459391 + 5.083333335 x = 4.528459391 + 5.083333335 Combine like terms: 4.528459391 + 5.083333335 = 9.611792726 x = 9.611792726 Simplifying x = 9.611792726

Subproblem 2

x + -5.083333335 = -4.528459391 Simplifying x + -5.083333335 = -4.528459391 Reorder the terms: -5.083333335 + x = -4.528459391 Solving -5.083333335 + x = -4.528459391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.083333335' to each side of the equation. -5.083333335 + 5.083333335 + x = -4.528459391 + 5.083333335 Combine like terms: -5.083333335 + 5.083333335 = 0.000000000 0.000000000 + x = -4.528459391 + 5.083333335 x = -4.528459391 + 5.083333335 Combine like terms: -4.528459391 + 5.083333335 = 0.554873944 x = 0.554873944 Simplifying x = 0.554873944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.611792726, 0.554873944}

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