x(5x+8)+3=x(2x-4)-3

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Solution for x(5x+8)+3=x(2x-4)-3 equation:


Simplifying
x(5x + 8) + 3 = x(2x + -4) + -3

Reorder the terms:
x(8 + 5x) + 3 = x(2x + -4) + -3
(8 * x + 5x * x) + 3 = x(2x + -4) + -3
(8x + 5x2) + 3 = x(2x + -4) + -3

Reorder the terms:
3 + 8x + 5x2 = x(2x + -4) + -3

Reorder the terms:
3 + 8x + 5x2 = x(-4 + 2x) + -3
3 + 8x + 5x2 = (-4 * x + 2x * x) + -3
3 + 8x + 5x2 = (-4x + 2x2) + -3

Reorder the terms:
3 + 8x + 5x2 = -3 + -4x + 2x2

Solving
3 + 8x + 5x2 = -3 + -4x + 2x2

Solving for variable 'x'.

Reorder the terms:
3 + 3 + 8x + 4x + 5x2 + -2x2 = -3 + -4x + 2x2 + 3 + 4x + -2x2

Combine like terms: 3 + 3 = 6
6 + 8x + 4x + 5x2 + -2x2 = -3 + -4x + 2x2 + 3 + 4x + -2x2

Combine like terms: 8x + 4x = 12x
6 + 12x + 5x2 + -2x2 = -3 + -4x + 2x2 + 3 + 4x + -2x2

Combine like terms: 5x2 + -2x2 = 3x2
6 + 12x + 3x2 = -3 + -4x + 2x2 + 3 + 4x + -2x2

Reorder the terms:
6 + 12x + 3x2 = -3 + 3 + -4x + 4x + 2x2 + -2x2

Combine like terms: -3 + 3 = 0
6 + 12x + 3x2 = 0 + -4x + 4x + 2x2 + -2x2
6 + 12x + 3x2 = -4x + 4x + 2x2 + -2x2

Combine like terms: -4x + 4x = 0
6 + 12x + 3x2 = 0 + 2x2 + -2x2
6 + 12x + 3x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
6 + 12x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(2 + 4x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(2 + 4x + x2)' equal to zero and attempt to solve: Simplifying 2 + 4x + x2 = 0 Solving 2 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + 4x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + 4x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 4x + x2 = 0 + -2 4x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 4x + x2 = -2 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = -2 + 4 Reorder the terms: 4 + 4x + x2 = -2 + 4 Combine like terms: -2 + 4 = 2 4 + 4x + x2 = 2 Factor a perfect square on the left side: (x + 2)(x + 2) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (x + 2) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + 2 = 1.414213562 Simplifying x + 2 = 1.414213562 Reorder the terms: 2 + x = 1.414213562 Solving 2 + x = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 1.414213562 + -2 Combine like terms: 2 + -2 = 0 0 + x = 1.414213562 + -2 x = 1.414213562 + -2 Combine like terms: 1.414213562 + -2 = -0.585786438 x = -0.585786438 Simplifying x = -0.585786438

Subproblem 2

x + 2 = -1.414213562 Simplifying x + 2 = -1.414213562 Reorder the terms: 2 + x = -1.414213562 Solving 2 + x = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -1.414213562 + -2 Combine like terms: 2 + -2 = 0 0 + x = -1.414213562 + -2 x = -1.414213562 + -2 Combine like terms: -1.414213562 + -2 = -3.414213562 x = -3.414213562 Simplifying x = -3.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.585786438, -3.414213562}

Solution

x = {-0.585786438, -3.414213562}

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