2x+2x^2=102

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Solution for 2x+2x^2=102 equation:


Simplifying
2x + 2x2 = 102

Solving
2x + 2x2 = 102

Solving for variable 'x'.

Reorder the terms:
-102 + 2x + 2x2 = 102 + -102

Combine like terms: 102 + -102 = 0
-102 + 2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-51 + x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-51 + x + x2)' equal to zero and attempt to solve: Simplifying -51 + x + x2 = 0 Solving -51 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '51' to each side of the equation. -51 + x + 51 + x2 = 0 + 51 Reorder the terms: -51 + 51 + x + x2 = 0 + 51 Combine like terms: -51 + 51 = 0 0 + x + x2 = 0 + 51 x + x2 = 0 + 51 Combine like terms: 0 + 51 = 51 x + x2 = 51 The x term is x. 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. x + 0.25 + x2 = 51 + 0.25 Reorder the terms: 0.25 + x + x2 = 51 + 0.25 Combine like terms: 51 + 0.25 = 51.25 0.25 + x + x2 = 51.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 51.25 Calculate the square root of the right side: 7.158910532 Break this problem into two subproblems by setting (x + 0.5) equal to 7.158910532 and -7.158910532.

Subproblem 1

x + 0.5 = 7.158910532 Simplifying x + 0.5 = 7.158910532 Reorder the terms: 0.5 + x = 7.158910532 Solving 0.5 + x = 7.158910532 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 = 7.158910532 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 7.158910532 + -0.5 x = 7.158910532 + -0.5 Combine like terms: 7.158910532 + -0.5 = 6.658910532 x = 6.658910532 Simplifying x = 6.658910532

Subproblem 2

x + 0.5 = -7.158910532 Simplifying x + 0.5 = -7.158910532 Reorder the terms: 0.5 + x = -7.158910532 Solving 0.5 + x = -7.158910532 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 = -7.158910532 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -7.158910532 + -0.5 x = -7.158910532 + -0.5 Combine like terms: -7.158910532 + -0.5 = -7.658910532 x = -7.658910532 Simplifying x = -7.658910532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.658910532, -7.658910532}

Solution

x = {6.658910532, -7.658910532}

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