180=.5x^2+2x+2

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Solution for 180=.5x^2+2x+2 equation:


Simplifying
180 = 0.5x2 + 2x + 2

Reorder the terms:
180 = 2 + 2x + 0.5x2

Solving
180 = 2 + 2x + 0.5x2

Solving for variable 'x'.

Combine like terms: 180 + -2 = 178
178 + -2x + -0.5x2 = 2 + 2x + 0.5x2 + -2 + -2x + -0.5x2

Reorder the terms:
178 + -2x + -0.5x2 = 2 + -2 + 2x + -2x + 0.5x2 + -0.5x2

Combine like terms: 2 + -2 = 0
178 + -2x + -0.5x2 = 0 + 2x + -2x + 0.5x2 + -0.5x2
178 + -2x + -0.5x2 = 2x + -2x + 0.5x2 + -0.5x2

Combine like terms: 2x + -2x = 0
178 + -2x + -0.5x2 = 0 + 0.5x2 + -0.5x2
178 + -2x + -0.5x2 = 0.5x2 + -0.5x2

Combine like terms: 0.5x2 + -0.5x2 = 0.0
178 + -2x + -0.5x2 = 0.0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
-356 + 4x + x2 = 0

Move the constant term to the right:

Add '356' to each side of the equation.
-356 + 4x + 356 + x2 = 0 + 356

Reorder the terms:
-356 + 356 + 4x + x2 = 0 + 356

Combine like terms: -356 + 356 = 0
0 + 4x + x2 = 0 + 356
4x + x2 = 0 + 356

Combine like terms: 0 + 356 = 356
4x + x2 = 356

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 356 + 4

Reorder the terms:
4 + 4x + x2 = 356 + 4

Combine like terms: 356 + 4 = 360
4 + 4x + x2 = 360

Factor a perfect square on the left side:
(x + 2)(x + 2) = 360

Calculate the square root of the right side: 18.973665961

Break this problem into two subproblems by setting 
(x + 2) equal to 18.973665961 and -18.973665961.

Subproblem 1

x + 2 = 18.973665961 Simplifying x + 2 = 18.973665961 Reorder the terms: 2 + x = 18.973665961 Solving 2 + x = 18.973665961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 18.973665961 + -2 Combine like terms: 2 + -2 = 0 0 + x = 18.973665961 + -2 x = 18.973665961 + -2 Combine like terms: 18.973665961 + -2 = 16.973665961 x = 16.973665961 Simplifying x = 16.973665961

Subproblem 2

x + 2 = -18.973665961 Simplifying x + 2 = -18.973665961 Reorder the terms: 2 + x = -18.973665961 Solving 2 + x = -18.973665961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -18.973665961 + -2 Combine like terms: 2 + -2 = 0 0 + x = -18.973665961 + -2 x = -18.973665961 + -2 Combine like terms: -18.973665961 + -2 = -20.973665961 x = -20.973665961 Simplifying x = -20.973665961

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.973665961, -20.973665961}

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