x^2-28x=96

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


Simplifying
x2 + -28x = 96

Reorder the terms:
-28x + x2 = 96

Solving
-28x + x2 = 96

Solving for variable 'x'.

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

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

Begin completing the square.

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 = 31.088007491 x = 31.088007491 Simplifying x = 31.088007491

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 = -3.088007491 x = -3.088007491 Simplifying x = -3.088007491

Solution

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

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