96-28x=x^2

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Solution for 96-28x=x^2 equation:


Simplifying
96 + -28x = x2

Solving
96 + -28x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
96 + -28x + -1x2 = 0

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

Divide each side by '-1'.
-96 + 28x + x2 = 0

Move the constant term to the right:

Add '96' to each side of the equation.
-96 + 28x + 96 + x2 = 0 + 96

Reorder the terms:
-96 + 96 + 28x + x2 = 0 + 96

Combine like terms: -96 + 96 = 0
0 + 28x + x2 = 0 + 96
28x + x2 = 0 + 96

Combine like terms: 0 + 96 = 96
28x + x2 = 96

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 = 96 + 196

Reorder the terms:
196 + 28x + x2 = 96 + 196

Combine like terms: 96 + 196 = 292
196 + 28x + x2 = 292

Factor a perfect square on the left side:
(x + 14)(x + 14) = 292

Calculate the square root of the right side: 17.088007491

Break this problem into two subproblems by setting 
(x + 14) equal to 17.088007491 and -17.088007491.

Subproblem 1

x + 14 = 17.088007491 Simplifying x + 14 = 17.088007491 Reorder the terms: 14 + x = 17.088007491 Solving 14 + x = 17.088007491 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 = 17.088007491 + -14 Combine like terms: 14 + -14 = 0 0 + x = 17.088007491 + -14 x = 17.088007491 + -14 Combine like terms: 17.088007491 + -14 = 3.088007491 x = 3.088007491 Simplifying x = 3.088007491

Subproblem 2

x + 14 = -17.088007491 Simplifying x + 14 = -17.088007491 Reorder the terms: 14 + x = -17.088007491 Solving 14 + x = -17.088007491 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 = -17.088007491 + -14 Combine like terms: 14 + -14 = 0 0 + x = -17.088007491 + -14 x = -17.088007491 + -14 Combine like terms: -17.088007491 + -14 = -31.088007491 x = -31.088007491 Simplifying x = -31.088007491

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.088007491, -31.088007491}

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