(5x-25)(2x+2)=x

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Solution for (5x-25)(2x+2)=x equation:


Simplifying
(5x + -25)(2x + 2) = x

Reorder the terms:
(-25 + 5x)(2x + 2) = x

Reorder the terms:
(-25 + 5x)(2 + 2x) = x

Multiply (-25 + 5x) * (2 + 2x)
(-25(2 + 2x) + 5x * (2 + 2x)) = x
((2 * -25 + 2x * -25) + 5x * (2 + 2x)) = x
((-50 + -50x) + 5x * (2 + 2x)) = x
(-50 + -50x + (2 * 5x + 2x * 5x)) = x
(-50 + -50x + (10x + 10x2)) = x

Combine like terms: -50x + 10x = -40x
(-50 + -40x + 10x2) = x

Solving
-50 + -40x + 10x2 = x

Solving for variable 'x'.

Reorder the terms:
-50 + -40x + -1x + 10x2 = x + -1x

Combine like terms: -40x + -1x = -41x
-50 + -41x + 10x2 = x + -1x

Combine like terms: x + -1x = 0
-50 + -41x + 10x2 = 0

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

Divide each side by '10'.
-5 + -4.1x + x2 = 0.0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -4.1x + 5 + x2 = 0.0 + 5

Reorder the terms:
-5 + 5 + -4.1x + x2 = 0.0 + 5

Combine like terms: -5 + 5 = 0
0 + -4.1x + x2 = 0.0 + 5
-4.1x + x2 = 0.0 + 5

Combine like terms: 0.0 + 5 = 5
-4.1x + x2 = 5

The x term is -4.1x.  Take half its coefficient (-2.05).
Square it (4.2025) and add it to both sides.

Add '4.2025' to each side of the equation.
-4.1x + 4.2025 + x2 = 5 + 4.2025

Reorder the terms:
4.2025 + -4.1x + x2 = 5 + 4.2025

Combine like terms: 5 + 4.2025 = 9.2025
4.2025 + -4.1x + x2 = 9.2025

Factor a perfect square on the left side:
(x + -2.05)(x + -2.05) = 9.2025

Calculate the square root of the right side: 3.033562262

Break this problem into two subproblems by setting 
(x + -2.05) equal to 3.033562262 and -3.033562262.

Subproblem 1

x + -2.05 = 3.033562262 Simplifying x + -2.05 = 3.033562262 Reorder the terms: -2.05 + x = 3.033562262 Solving -2.05 + x = 3.033562262 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.05' to each side of the equation. -2.05 + 2.05 + x = 3.033562262 + 2.05 Combine like terms: -2.05 + 2.05 = 0.00 0.00 + x = 3.033562262 + 2.05 x = 3.033562262 + 2.05 Combine like terms: 3.033562262 + 2.05 = 5.083562262 x = 5.083562262 Simplifying x = 5.083562262

Subproblem 2

x + -2.05 = -3.033562262 Simplifying x + -2.05 = -3.033562262 Reorder the terms: -2.05 + x = -3.033562262 Solving -2.05 + x = -3.033562262 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.05' to each side of the equation. -2.05 + 2.05 + x = -3.033562262 + 2.05 Combine like terms: -2.05 + 2.05 = 0.00 0.00 + x = -3.033562262 + 2.05 x = -3.033562262 + 2.05 Combine like terms: -3.033562262 + 2.05 = -0.983562262 x = -0.983562262 Simplifying x = -0.983562262

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.083562262, -0.983562262}

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