2x(5-x)=2(2x+1)

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Solution for 2x(5-x)=2(2x+1) equation:


Simplifying
2x(5 + -1x) = 2(2x + 1)
(5 * 2x + -1x * 2x) = 2(2x + 1)
(10x + -2x2) = 2(2x + 1)

Reorder the terms:
10x + -2x2 = 2(1 + 2x)
10x + -2x2 = (1 * 2 + 2x * 2)
10x + -2x2 = (2 + 4x)

Solving
10x + -2x2 = 2 + 4x

Solving for variable 'x'.

Reorder the terms:
-2 + 10x + -4x + -2x2 = 2 + 4x + -2 + -4x

Combine like terms: 10x + -4x = 6x
-2 + 6x + -2x2 = 2 + 4x + -2 + -4x

Reorder the terms:
-2 + 6x + -2x2 = 2 + -2 + 4x + -4x

Combine like terms: 2 + -2 = 0
-2 + 6x + -2x2 = 0 + 4x + -4x
-2 + 6x + -2x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-2 + 6x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-1 + 3x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + 3x + -1x2)' equal to zero and attempt to solve: Simplifying -1 + 3x + -1x2 = 0 Solving -1 + 3x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 1 + -3x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -3x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -3x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x + x2 = 0 + -1 -3x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -3x + x2 = -1 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = -1 + 2.25 Reorder the terms: 2.25 + -3x + x2 = -1 + 2.25 Combine like terms: -1 + 2.25 = 1.25 2.25 + -3x + x2 = 1.25 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 1.25 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (x + -1.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + -1.5 = 1.118033989 Simplifying x + -1.5 = 1.118033989 Reorder the terms: -1.5 + x = 1.118033989 Solving -1.5 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.118033989 + 1.5 x = 1.118033989 + 1.5 Combine like terms: 1.118033989 + 1.5 = 2.618033989 x = 2.618033989 Simplifying x = 2.618033989

Subproblem 2

x + -1.5 = -1.118033989 Simplifying x + -1.5 = -1.118033989 Reorder the terms: -1.5 + x = -1.118033989 Solving -1.5 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.118033989 + 1.5 x = -1.118033989 + 1.5 Combine like terms: -1.118033989 + 1.5 = 0.381966011 x = 0.381966011 Simplifying x = 0.381966011

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.618033989, 0.381966011}

Solution

x = {2.618033989, 0.381966011}

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