(2x+1)x=274

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Solution for (2x+1)x=274 equation:


Simplifying
(2x + 1) * x = 274

Reorder the terms:
(1 + 2x) * x = 274

Reorder the terms for easier multiplication:
x(1 + 2x) = 274
(1 * x + 2x * x) = 274
(1x + 2x2) = 274

Solving
1x + 2x2 = 274

Solving for variable 'x'.

Reorder the terms:
-274 + 1x + 2x2 = 274 + -274

Combine like terms: 274 + -274 = 0
-274 + 1x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-137 + 0.5x + x2 = 0

Move the constant term to the right:

Add '137' to each side of the equation.
-137 + 0.5x + 137 + x2 = 0 + 137

Reorder the terms:
-137 + 137 + 0.5x + x2 = 0 + 137

Combine like terms: -137 + 137 = 0
0 + 0.5x + x2 = 0 + 137
0.5x + x2 = 0 + 137

Combine like terms: 0 + 137 = 137
0.5x + x2 = 137

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 137 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 137 + 0.0625

Combine like terms: 137 + 0.0625 = 137.0625
0.0625 + 0.5x + x2 = 137.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 137.0625

Calculate the square root of the right side: 11.707369474

Break this problem into two subproblems by setting 
(x + 0.25) equal to 11.707369474 and -11.707369474.

Subproblem 1

x + 0.25 = 11.707369474 Simplifying x + 0.25 = 11.707369474 Reorder the terms: 0.25 + x = 11.707369474 Solving 0.25 + x = 11.707369474 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 11.707369474 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 11.707369474 + -0.25 x = 11.707369474 + -0.25 Combine like terms: 11.707369474 + -0.25 = 11.457369474 x = 11.457369474 Simplifying x = 11.457369474

Subproblem 2

x + 0.25 = -11.707369474 Simplifying x + 0.25 = -11.707369474 Reorder the terms: 0.25 + x = -11.707369474 Solving 0.25 + x = -11.707369474 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -11.707369474 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -11.707369474 + -0.25 x = -11.707369474 + -0.25 Combine like terms: -11.707369474 + -0.25 = -11.957369474 x = -11.957369474 Simplifying x = -11.957369474

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.457369474, -11.957369474}

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