4-2x=2x^2+8x-6

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Solution for 4-2x=2x^2+8x-6 equation:


Simplifying
4 + -2x = 2x2 + 8x + -6

Reorder the terms:
4 + -2x = -6 + 8x + 2x2

Solving
4 + -2x = -6 + 8x + 2x2

Solving for variable 'x'.

Reorder the terms:
4 + 6 + -2x + -8x + -2x2 = -6 + 8x + 2x2 + 6 + -8x + -2x2

Combine like terms: 4 + 6 = 10
10 + -2x + -8x + -2x2 = -6 + 8x + 2x2 + 6 + -8x + -2x2

Combine like terms: -2x + -8x = -10x
10 + -10x + -2x2 = -6 + 8x + 2x2 + 6 + -8x + -2x2

Reorder the terms:
10 + -10x + -2x2 = -6 + 6 + 8x + -8x + 2x2 + -2x2

Combine like terms: -6 + 6 = 0
10 + -10x + -2x2 = 0 + 8x + -8x + 2x2 + -2x2
10 + -10x + -2x2 = 8x + -8x + 2x2 + -2x2

Combine like terms: 8x + -8x = 0
10 + -10x + -2x2 = 0 + 2x2 + -2x2
10 + -10x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
10 + -10x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(5 + -5x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(5 + -5x + -1x2)' equal to zero and attempt to solve: Simplifying 5 + -5x + -1x2 = 0 Solving 5 + -5x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -5 + 5x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + 5x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + 5x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 5x + x2 = 0 + 5 5x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 5x + x2 = 5 The x term is 5x. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5x + 6.25 + x2 = 5 + 6.25 Reorder the terms: 6.25 + 5x + x2 = 5 + 6.25 Combine like terms: 5 + 6.25 = 11.25 6.25 + 5x + x2 = 11.25 Factor a perfect square on the left side: (x + 2.5)(x + 2.5) = 11.25 Calculate the square root of the right side: 3.354101966 Break this problem into two subproblems by setting (x + 2.5) equal to 3.354101966 and -3.354101966.

Subproblem 1

x + 2.5 = 3.354101966 Simplifying x + 2.5 = 3.354101966 Reorder the terms: 2.5 + x = 3.354101966 Solving 2.5 + x = 3.354101966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 3.354101966 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 3.354101966 + -2.5 x = 3.354101966 + -2.5 Combine like terms: 3.354101966 + -2.5 = 0.854101966 x = 0.854101966 Simplifying x = 0.854101966

Subproblem 2

x + 2.5 = -3.354101966 Simplifying x + 2.5 = -3.354101966 Reorder the terms: 2.5 + x = -3.354101966 Solving 2.5 + x = -3.354101966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -3.354101966 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -3.354101966 + -2.5 x = -3.354101966 + -2.5 Combine like terms: -3.354101966 + -2.5 = -5.854101966 x = -5.854101966 Simplifying x = -5.854101966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.854101966, -5.854101966}

Solution

x = {0.854101966, -5.854101966}

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