(5-2x)(5-2x)=(2)(x)(x)

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


Simplifying
(5 + -2x)(5 + -2x) = (2)(x)(x)

Multiply (5 + -2x) * (5 + -2x)
(5(5 + -2x) + -2x * (5 + -2x)) = (2)(x)(x)
((5 * 5 + -2x * 5) + -2x * (5 + -2x)) = (2)(x)(x)
((25 + -10x) + -2x * (5 + -2x)) = (2)(x)(x)
(25 + -10x + (5 * -2x + -2x * -2x)) = (2)(x)(x)
(25 + -10x + (-10x + 4x2)) = (2)(x)(x)

Combine like terms: -10x + -10x = -20x
(25 + -20x + 4x2) = (2)(x)(x)

Multiply x * x
25 + -20x + 4x2 = 2x2

Solving
25 + -20x + 4x2 = 2x2

Solving for variable 'x'.

Combine like terms: 4x2 + -2x2 = 2x2
25 + -20x + 2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
25 + -20x + 2x2 = 0

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

Divide each side by '2'.
12.5 + -10x + x2 = 0

Move the constant term to the right:

Add '-12.5' to each side of the equation.
12.5 + -10x + -12.5 + x2 = 0 + -12.5

Reorder the terms:
12.5 + -12.5 + -10x + x2 = 0 + -12.5

Combine like terms: 12.5 + -12.5 = 0.0
0.0 + -10x + x2 = 0 + -12.5
-10x + x2 = 0 + -12.5

Combine like terms: 0 + -12.5 = -12.5
-10x + x2 = -12.5

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -12.5 + 25

Reorder the terms:
25 + -10x + x2 = -12.5 + 25

Combine like terms: -12.5 + 25 = 12.5
25 + -10x + x2 = 12.5

Factor a perfect square on the left side:
(x + -5)(x + -5) = 12.5

Calculate the square root of the right side: 3.535533906

Break this problem into two subproblems by setting 
(x + -5) equal to 3.535533906 and -3.535533906.

Subproblem 1

x + -5 = 3.535533906 Simplifying x + -5 = 3.535533906 Reorder the terms: -5 + x = 3.535533906 Solving -5 + x = 3.535533906 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 3.535533906 + 5 Combine like terms: -5 + 5 = 0 0 + x = 3.535533906 + 5 x = 3.535533906 + 5 Combine like terms: 3.535533906 + 5 = 8.535533906 x = 8.535533906 Simplifying x = 8.535533906

Subproblem 2

x + -5 = -3.535533906 Simplifying x + -5 = -3.535533906 Reorder the terms: -5 + x = -3.535533906 Solving -5 + x = -3.535533906 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -3.535533906 + 5 Combine like terms: -5 + 5 = 0 0 + x = -3.535533906 + 5 x = -3.535533906 + 5 Combine like terms: -3.535533906 + 5 = 1.464466094 x = 1.464466094 Simplifying x = 1.464466094

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.535533906, 1.464466094}

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