2x^2+12=2x+28

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Solution for 2x^2+12=2x+28 equation:


Simplifying
2x2 + 12 = 2x + 28

Reorder the terms:
12 + 2x2 = 2x + 28

Reorder the terms:
12 + 2x2 = 28 + 2x

Solving
12 + 2x2 = 28 + 2x

Solving for variable 'x'.

Reorder the terms:
12 + -28 + -2x + 2x2 = 28 + 2x + -28 + -2x

Combine like terms: 12 + -28 = -16
-16 + -2x + 2x2 = 28 + 2x + -28 + -2x

Reorder the terms:
-16 + -2x + 2x2 = 28 + -28 + 2x + -2x

Combine like terms: 28 + -28 = 0
-16 + -2x + 2x2 = 0 + 2x + -2x
-16 + -2x + 2x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-16 + -2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + -1x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-8 + -1x + x2)' equal to zero and attempt to solve: Simplifying -8 + -1x + x2 = 0 Solving -8 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '8' to each side of the equation. -8 + -1x + 8 + x2 = 0 + 8 Reorder the terms: -8 + 8 + -1x + x2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x + x2 = 0 + 8 -1x + x2 = 0 + 8 Combine like terms: 0 + 8 = 8 -1x + x2 = 8 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 8 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 8 + 0.25 Combine like terms: 8 + 0.25 = 8.25 0.25 + -1x + x2 = 8.25 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 8.25 Calculate the square root of the right side: 2.872281323 Break this problem into two subproblems by setting (x + -0.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

x + -0.5 = 2.872281323 Simplifying x + -0.5 = 2.872281323 Reorder the terms: -0.5 + x = 2.872281323 Solving -0.5 + x = 2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 2.872281323 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 2.872281323 + 0.5 x = 2.872281323 + 0.5 Combine like terms: 2.872281323 + 0.5 = 3.372281323 x = 3.372281323 Simplifying x = 3.372281323

Subproblem 2

x + -0.5 = -2.872281323 Simplifying x + -0.5 = -2.872281323 Reorder the terms: -0.5 + x = -2.872281323 Solving -0.5 + x = -2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -2.872281323 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -2.872281323 + 0.5 x = -2.872281323 + 0.5 Combine like terms: -2.872281323 + 0.5 = -2.372281323 x = -2.372281323 Simplifying x = -2.372281323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.372281323, -2.372281323}

Solution

x = {3.372281323, -2.372281323}

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