x^2-112=20x

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Solution for x^2-112=20x equation:


Simplifying
x2 + -112 = 20x

Reorder the terms:
-112 + x2 = 20x

Solving
-112 + x2 = 20x

Solving for variable 'x'.

Reorder the terms:
-112 + -20x + x2 = 20x + -20x

Combine like terms: 20x + -20x = 0
-112 + -20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + -20x + 112 + x2 = 0 + 112

Reorder the terms:
-112 + 112 + -20x + x2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + -20x + x2 = 0 + 112
-20x + x2 = 0 + 112

Combine like terms: 0 + 112 = 112
-20x + x2 = 112

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = 112 + 100

Reorder the terms:
100 + -20x + x2 = 112 + 100

Combine like terms: 112 + 100 = 212
100 + -20x + x2 = 212

Factor a perfect square on the left side:
(x + -10)(x + -10) = 212

Calculate the square root of the right side: 14.560219779

Break this problem into two subproblems by setting 
(x + -10) equal to 14.560219779 and -14.560219779.

Subproblem 1

x + -10 = 14.560219779 Simplifying x + -10 = 14.560219779 Reorder the terms: -10 + x = 14.560219779 Solving -10 + x = 14.560219779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 14.560219779 + 10 Combine like terms: -10 + 10 = 0 0 + x = 14.560219779 + 10 x = 14.560219779 + 10 Combine like terms: 14.560219779 + 10 = 24.560219779 x = 24.560219779 Simplifying x = 24.560219779

Subproblem 2

x + -10 = -14.560219779 Simplifying x + -10 = -14.560219779 Reorder the terms: -10 + x = -14.560219779 Solving -10 + x = -14.560219779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -14.560219779 + 10 Combine like terms: -10 + 10 = 0 0 + x = -14.560219779 + 10 x = -14.560219779 + 10 Combine like terms: -14.560219779 + 10 = -4.560219779 x = -4.560219779 Simplifying x = -4.560219779

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.560219779, -4.560219779}

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