50=2x^2+x

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Solution for 50=2x^2+x equation:


Simplifying
50 = 2x2 + x

Reorder the terms:
50 = x + 2x2

Solving
50 = x + 2x2

Solving for variable 'x'.

Reorder the terms:
50 + -1x + -2x2 = x + -1x + 2x2 + -2x2

Combine like terms: x + -1x = 0
50 + -1x + -2x2 = 0 + 2x2 + -2x2
50 + -1x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
50 + -1x + -2x2 = 0

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

Divide each side by '-2'.
-25 + 0.5x + x2 = 0

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + 0.5x + 25 + x2 = 0 + 25

Reorder the terms:
-25 + 25 + 0.5x + x2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + 0.5x + x2 = 0 + 25
0.5x + x2 = 0 + 25

Combine like terms: 0 + 25 = 25
0.5x + x2 = 25

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 = 25 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 25 + 0.0625

Combine like terms: 25 + 0.0625 = 25.0625
0.0625 + 0.5x + x2 = 25.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 25.0625

Calculate the square root of the right side: 5.006246099

Break this problem into two subproblems by setting 
(x + 0.25) equal to 5.006246099 and -5.006246099.

Subproblem 1

x + 0.25 = 5.006246099 Simplifying x + 0.25 = 5.006246099 Reorder the terms: 0.25 + x = 5.006246099 Solving 0.25 + x = 5.006246099 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 = 5.006246099 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 5.006246099 + -0.25 x = 5.006246099 + -0.25 Combine like terms: 5.006246099 + -0.25 = 4.756246099 x = 4.756246099 Simplifying x = 4.756246099

Subproblem 2

x + 0.25 = -5.006246099 Simplifying x + 0.25 = -5.006246099 Reorder the terms: 0.25 + x = -5.006246099 Solving 0.25 + x = -5.006246099 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 = -5.006246099 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -5.006246099 + -0.25 x = -5.006246099 + -0.25 Combine like terms: -5.006246099 + -0.25 = -5.256246099 x = -5.256246099 Simplifying x = -5.256246099

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.756246099, -5.256246099}

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