x(x+100)=110

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Solution for x(x+100)=110 equation:


Simplifying
x(x + 100) = 110

Reorder the terms:
x(100 + x) = 110
(100 * x + x * x) = 110
(100x + x2) = 110

Solving
100x + x2 = 110

Solving for variable 'x'.

Reorder the terms:
-110 + 100x + x2 = 110 + -110

Combine like terms: 110 + -110 = 0
-110 + 100x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '110' to each side of the equation.
-110 + 100x + 110 + x2 = 0 + 110

Reorder the terms:
-110 + 110 + 100x + x2 = 0 + 110

Combine like terms: -110 + 110 = 0
0 + 100x + x2 = 0 + 110
100x + x2 = 0 + 110

Combine like terms: 0 + 110 = 110
100x + x2 = 110

The x term is 100x.  Take half its coefficient (50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
100x + 2500 + x2 = 110 + 2500

Reorder the terms:
2500 + 100x + x2 = 110 + 2500

Combine like terms: 110 + 2500 = 2610
2500 + 100x + x2 = 2610

Factor a perfect square on the left side:
(x + 50)(x + 50) = 2610

Calculate the square root of the right side: 51.088159098

Break this problem into two subproblems by setting 
(x + 50) equal to 51.088159098 and -51.088159098.

Subproblem 1

x + 50 = 51.088159098 Simplifying x + 50 = 51.088159098 Reorder the terms: 50 + x = 51.088159098 Solving 50 + x = 51.088159098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = 51.088159098 + -50 Combine like terms: 50 + -50 = 0 0 + x = 51.088159098 + -50 x = 51.088159098 + -50 Combine like terms: 51.088159098 + -50 = 1.088159098 x = 1.088159098 Simplifying x = 1.088159098

Subproblem 2

x + 50 = -51.088159098 Simplifying x + 50 = -51.088159098 Reorder the terms: 50 + x = -51.088159098 Solving 50 + x = -51.088159098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = -51.088159098 + -50 Combine like terms: 50 + -50 = 0 0 + x = -51.088159098 + -50 x = -51.088159098 + -50 Combine like terms: -51.088159098 + -50 = -101.088159098 x = -101.088159098 Simplifying x = -101.088159098

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.088159098, -101.088159098}

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