162=12x+0.5x^2

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Solution for 162=12x+0.5x^2 equation:


Simplifying
162 = 12x + 0.5x2

Solving
162 = 12x + 0.5x2

Solving for variable 'x'.

Reorder the terms:
162 + -12x + -0.5x2 = 12x + -12x + 0.5x2 + -0.5x2

Combine like terms: 12x + -12x = 0
162 + -12x + -0.5x2 = 0 + 0.5x2 + -0.5x2
162 + -12x + -0.5x2 = 0.5x2 + -0.5x2

Combine like terms: 0.5x2 + -0.5x2 = 0.0
162 + -12x + -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'.
-324 + 24x + x2 = 0

Move the constant term to the right:

Add '324' to each side of the equation.
-324 + 24x + 324 + x2 = 0 + 324

Reorder the terms:
-324 + 324 + 24x + x2 = 0 + 324

Combine like terms: -324 + 324 = 0
0 + 24x + x2 = 0 + 324
24x + x2 = 0 + 324

Combine like terms: 0 + 324 = 324
24x + x2 = 324

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 324 + 144

Reorder the terms:
144 + 24x + x2 = 324 + 144

Combine like terms: 324 + 144 = 468
144 + 24x + x2 = 468

Factor a perfect square on the left side:
(x + 12)(x + 12) = 468

Calculate the square root of the right side: 21.633307653

Break this problem into two subproblems by setting 
(x + 12) equal to 21.633307653 and -21.633307653.

Subproblem 1

x + 12 = 21.633307653 Simplifying x + 12 = 21.633307653 Reorder the terms: 12 + x = 21.633307653 Solving 12 + x = 21.633307653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 21.633307653 + -12 Combine like terms: 12 + -12 = 0 0 + x = 21.633307653 + -12 x = 21.633307653 + -12 Combine like terms: 21.633307653 + -12 = 9.633307653 x = 9.633307653 Simplifying x = 9.633307653

Subproblem 2

x + 12 = -21.633307653 Simplifying x + 12 = -21.633307653 Reorder the terms: 12 + x = -21.633307653 Solving 12 + x = -21.633307653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -21.633307653 + -12 Combine like terms: 12 + -12 = 0 0 + x = -21.633307653 + -12 x = -21.633307653 + -12 Combine like terms: -21.633307653 + -12 = -33.633307653 x = -33.633307653 Simplifying x = -33.633307653

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.633307653, -33.633307653}

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