600=x(2x+2)

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Solution for 600=x(2x+2) equation: 


Simplifying
600 = x(2x + 2)

Reorder the terms:
600 = x(2 + 2x)
600 = (2 * x + 2x * x)
600 = (2x + 2x2)

Solving
600 = 2x + 2x2

Solving for variable 'x'.

Reorder the terms:
600 + -2x + -2x2 = 2x + -2x + 2x2 + -2x2

Combine like terms: 2x + -2x = 0
600 + -2x + -2x2 = 0 + 2x2 + -2x2
600 + -2x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
600 + -2x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(300 + -1x + -1x2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(300 + -1x + -1x2)' equal to zero and attempt to solve:

Simplifying
300 + -1x + -1x2 = 0

Solving
300 + -1x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-300 + x + x2 = 0

Move the constant term to the right:

Add '300' to each side of the equation.
-300 + x + 300 + x2 = 0 + 300

Reorder the terms:
-300 + 300 + x + x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + x + x2 = 0 + 300
x + x2 = 0 + 300

Combine like terms: 0 + 300 = 300
x + x2 = 300

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 300 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 300 + 0.25

Combine like terms: 300 + 0.25 = 300.25
1.25 + x2 = 300.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 300.25

Calculate the square root of the right side: 17.327723451

Break this problem into two subproblems by setting 
(x + 0.5) equal to 17.327723451 and -17.327723451.


Subproblem 1
x + 0.5 = 17.327723451

Simplifying
x + 0.5 = 17.327723451

Reorder the terms:
0.5 + x = 17.327723451

Solving
0.5 + x = 17.327723451

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.5' to each side of the equation.
0.5 + -0.5 + x = 17.327723451 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = 17.327723451 + -0.5
x = 17.327723451 + -0.5

Combine like terms: 17.327723451 + -0.5 = 16.827723451
x = 16.827723451

Simplifying
x = 16.827723451


Subproblem 2
x + 0.5 = -17.327723451

Simplifying
x + 0.5 = -17.327723451

Reorder the terms:
0.5 + x = -17.327723451

Solving
0.5 + x = -17.327723451

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.5' to each side of the equation.
0.5 + -0.5 + x = -17.327723451 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = -17.327723451 + -0.5
x = -17.327723451 + -0.5

Combine like terms: -17.327723451 + -0.5 = -17.827723451
x = -17.827723451

Simplifying
x = -17.827723451


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {16.827723451, -17.827723451}
Solution
x = {16.827723451, -17.827723451}

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