144=28x+x^2

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Solution for 144=28x+x^2 equation:


Simplifying
144 = 28x + x2

Solving
144 = 28x + x2

Solving for variable 'x'.

Reorder the terms:
144 + -28x + -1x2 = 28x + -28x + x2 + -1x2

Combine like terms: 28x + -28x = 0
144 + -28x + -1x2 = 0 + x2 + -1x2
144 + -28x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
144 + -28x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-144 + 28x + x2 = 0

Move the constant term to the right:

Add '144' to each side of the equation.
-144 + 28x + 144 + x2 = 0 + 144

Reorder the terms:
-144 + 144 + 28x + x2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + 28x + x2 = 0 + 144
28x + x2 = 0 + 144

Combine like terms: 0 + 144 = 144
28x + x2 = 144

The x term is 28x.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28x + 196 + x2 = 144 + 196

Reorder the terms:
196 + 28x + x2 = 144 + 196

Combine like terms: 144 + 196 = 340
196 + 28x + x2 = 340

Factor a perfect square on the left side:
(x + 14)(x + 14) = 340

Calculate the square root of the right side: 18.439088915

Break this problem into two subproblems by setting 
(x + 14) equal to 18.439088915 and -18.439088915.

Subproblem 1

x + 14 = 18.439088915 Simplifying x + 14 = 18.439088915 Reorder the terms: 14 + x = 18.439088915 Solving 14 + x = 18.439088915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 18.439088915 + -14 Combine like terms: 14 + -14 = 0 0 + x = 18.439088915 + -14 x = 18.439088915 + -14 Combine like terms: 18.439088915 + -14 = 4.439088915 x = 4.439088915 Simplifying x = 4.439088915

Subproblem 2

x + 14 = -18.439088915 Simplifying x + 14 = -18.439088915 Reorder the terms: 14 + x = -18.439088915 Solving 14 + x = -18.439088915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = -18.439088915 + -14 Combine like terms: 14 + -14 = 0 0 + x = -18.439088915 + -14 x = -18.439088915 + -14 Combine like terms: -18.439088915 + -14 = -32.439088915 x = -32.439088915 Simplifying x = -32.439088915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.439088915, -32.439088915}

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