2x^2-x+2=180

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Solution for 2x^2-x+2=180 equation:


Simplifying
2x2 + -1x + 2 = 180

Reorder the terms:
2 + -1x + 2x2 = 180

Solving
2 + -1x + 2x2 = 180

Solving for variable 'x'.

Reorder the terms:
2 + -180 + -1x + 2x2 = 180 + -180

Combine like terms: 2 + -180 = -178
-178 + -1x + 2x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-178 + -1x + 2x2 = 0

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

Divide each side by '2'.
-89 + -0.5x + x2 = 0

Move the constant term to the right:

Add '89' to each side of the equation.
-89 + -0.5x + 89 + x2 = 0 + 89

Reorder the terms:
-89 + 89 + -0.5x + x2 = 0 + 89

Combine like terms: -89 + 89 = 0
0 + -0.5x + x2 = 0 + 89
-0.5x + x2 = 0 + 89

Combine like terms: 0 + 89 = 89
-0.5x + x2 = 89

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 = 89 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 89 + 0.0625

Combine like terms: 89 + 0.0625 = 89.0625
0.0625 + -0.5x + x2 = 89.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 89.0625

Calculate the square root of the right side: 9.437293044

Break this problem into two subproblems by setting 
(x + -0.25) equal to 9.437293044 and -9.437293044.

Subproblem 1

x + -0.25 = 9.437293044 Simplifying x + -0.25 = 9.437293044 Reorder the terms: -0.25 + x = 9.437293044 Solving -0.25 + x = 9.437293044 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 = 9.437293044 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 9.437293044 + 0.25 x = 9.437293044 + 0.25 Combine like terms: 9.437293044 + 0.25 = 9.687293044 x = 9.687293044 Simplifying x = 9.687293044

Subproblem 2

x + -0.25 = -9.437293044 Simplifying x + -0.25 = -9.437293044 Reorder the terms: -0.25 + x = -9.437293044 Solving -0.25 + x = -9.437293044 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 = -9.437293044 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -9.437293044 + 0.25 x = -9.437293044 + 0.25 Combine like terms: -9.437293044 + 0.25 = -9.187293044 x = -9.187293044 Simplifying x = -9.187293044

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.687293044, -9.187293044}

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