2x^2+x=.925

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Solution for 2x^2+x=.925 equation:


Simplifying
2x2 + x = 0.925

Reorder the terms:
x + 2x2 = 0.925

Solving
x + 2x2 = 0.925

Solving for variable 'x'.

Reorder the terms:
-0.925 + x + 2x2 = 0.925 + -0.925

Combine like terms: 0.925 + -0.925 = 0.000
-0.925 + x + 2x2 = 0.000

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

Divide each side by '2'.
-0.4625 + 0.5x + x2 = 0.000

Move the constant term to the right:

Add '0.4625' to each side of the equation.
-0.4625 + 0.5x + 0.4625 + x2 = 0.000 + 0.4625

Reorder the terms:
-0.4625 + 0.4625 + 0.5x + x2 = 0.000 + 0.4625

Combine like terms: -0.4625 + 0.4625 = 0.0000
0.0000 + 0.5x + x2 = 0.000 + 0.4625
0.5x + x2 = 0.000 + 0.4625

Combine like terms: 0.000 + 0.4625 = 0.4625
0.5x + x2 = 0.4625

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.
0.5x + 0.25 + x2 = 0.4625 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = 0.4625 + 0.25

Combine like terms: 0.4625 + 0.25 = 0.7125
0.25 + 0.5x + x2 = 0.7125

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.7125

Calculate the square root of the right side: 0.844097151

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.844097151 and -0.844097151.

Subproblem 1

x + 0.5 = 0.844097151 Simplifying x + 0.5 = 0.844097151 Reorder the terms: 0.5 + x = 0.844097151 Solving 0.5 + x = 0.844097151 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 = 0.844097151 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.844097151 + -0.5 x = 0.844097151 + -0.5 Combine like terms: 0.844097151 + -0.5 = 0.344097151 x = 0.344097151 Simplifying x = 0.344097151

Subproblem 2

x + 0.5 = -0.844097151 Simplifying x + 0.5 = -0.844097151 Reorder the terms: 0.5 + x = -0.844097151 Solving 0.5 + x = -0.844097151 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 = -0.844097151 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.844097151 + -0.5 x = -0.844097151 + -0.5 Combine like terms: -0.844097151 + -0.5 = -1.344097151 x = -1.344097151 Simplifying x = -1.344097151

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.344097151, -1.344097151}

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