x(x-2)=432

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Solution for x(x-2)=432 equation:


Simplifying
x(x + -2) = 432

Reorder the terms:
x(-2 + x) = 432
(-2 * x + x * x) = 432
(-2x + x2) = 432

Solving
-2x + x2 = 432

Solving for variable 'x'.

Reorder the terms:
-432 + -2x + x2 = 432 + -432

Combine like terms: 432 + -432 = 0
-432 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '432' to each side of the equation.
-432 + -2x + 432 + x2 = 0 + 432

Reorder the terms:
-432 + 432 + -2x + x2 = 0 + 432

Combine like terms: -432 + 432 = 0
0 + -2x + x2 = 0 + 432
-2x + x2 = 0 + 432

Combine like terms: 0 + 432 = 432
-2x + x2 = 432

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 432 + 1

Reorder the terms:
1 + -2x + x2 = 432 + 1

Combine like terms: 432 + 1 = 433
1 + -2x + x2 = 433

Factor a perfect square on the left side:
(x + -1)(x + -1) = 433

Calculate the square root of the right side: 20.808652047

Break this problem into two subproblems by setting 
(x + -1) equal to 20.808652047 and -20.808652047.

Subproblem 1

x + -1 = 20.808652047 Simplifying x + -1 = 20.808652047 Reorder the terms: -1 + x = 20.808652047 Solving -1 + x = 20.808652047 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 20.808652047 + 1 Combine like terms: -1 + 1 = 0 0 + x = 20.808652047 + 1 x = 20.808652047 + 1 Combine like terms: 20.808652047 + 1 = 21.808652047 x = 21.808652047 Simplifying x = 21.808652047

Subproblem 2

x + -1 = -20.808652047 Simplifying x + -1 = -20.808652047 Reorder the terms: -1 + x = -20.808652047 Solving -1 + x = -20.808652047 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -20.808652047 + 1 Combine like terms: -1 + 1 = 0 0 + x = -20.808652047 + 1 x = -20.808652047 + 1 Combine like terms: -20.808652047 + 1 = -19.808652047 x = -19.808652047 Simplifying x = -19.808652047

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.808652047, -19.808652047}

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