5x(x-2)=22

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


Simplifying
5x(x + -2) = 22

Reorder the terms:
5x(-2 + x) = 22
(-2 * 5x + x * 5x) = 22
(-10x + 5x2) = 22

Solving
-10x + 5x2 = 22

Solving for variable 'x'.

Reorder the terms:
-22 + -10x + 5x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + -10x + 5x2 = 0

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

Divide each side by '5'.
-4.4 + -2x + x2 = 0

Move the constant term to the right:

Add '4.4' to each side of the equation.
-4.4 + -2x + 4.4 + x2 = 0 + 4.4

Reorder the terms:
-4.4 + 4.4 + -2x + x2 = 0 + 4.4

Combine like terms: -4.4 + 4.4 = 0.0
0.0 + -2x + x2 = 0 + 4.4
-2x + x2 = 0 + 4.4

Combine like terms: 0 + 4.4 = 4.4
-2x + x2 = 4.4

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 = 4.4 + 1

Reorder the terms:
1 + -2x + x2 = 4.4 + 1

Combine like terms: 4.4 + 1 = 5.4
1 + -2x + x2 = 5.4

Factor a perfect square on the left side:
(x + -1)(x + -1) = 5.4

Calculate the square root of the right side: 2.323790008

Break this problem into two subproblems by setting 
(x + -1) equal to 2.323790008 and -2.323790008.

Subproblem 1

x + -1 = 2.323790008 Simplifying x + -1 = 2.323790008 Reorder the terms: -1 + x = 2.323790008 Solving -1 + x = 2.323790008 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 = 2.323790008 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.323790008 + 1 x = 2.323790008 + 1 Combine like terms: 2.323790008 + 1 = 3.323790008 x = 3.323790008 Simplifying x = 3.323790008

Subproblem 2

x + -1 = -2.323790008 Simplifying x + -1 = -2.323790008 Reorder the terms: -1 + x = -2.323790008 Solving -1 + x = -2.323790008 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 = -2.323790008 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.323790008 + 1 x = -2.323790008 + 1 Combine like terms: -2.323790008 + 1 = -1.323790008 x = -1.323790008 Simplifying x = -1.323790008

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.323790008, -1.323790008}

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