113.097=x(x+10)

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Solution for 113.097=x(x+10) equation:


Simplifying
113.097 = x(x + 10)

Reorder the terms:
113.097 = x(10 + x)
113.097 = (10 * x + x * x)
113.097 = (10x + x2)

Solving
113.097 = 10x + x2

Solving for variable 'x'.

Reorder the terms:
113.097 + -10x + -1x2 = 10x + -10x + x2 + -1x2

Combine like terms: 10x + -10x = 0
113.097 + -10x + -1x2 = 0 + x2 + -1x2
113.097 + -10x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
113.097 + -10x + -1x2 = 0

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

Divide each side by '-1'.
-113.097 + 10x + x2 = 0

Move the constant term to the right:

Add '113.097' to each side of the equation.
-113.097 + 10x + 113.097 + x2 = 0 + 113.097

Reorder the terms:
-113.097 + 113.097 + 10x + x2 = 0 + 113.097

Combine like terms: -113.097 + 113.097 = 0.000
0.000 + 10x + x2 = 0 + 113.097
10x + x2 = 0 + 113.097

Combine like terms: 0 + 113.097 = 113.097
10x + x2 = 113.097

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 113.097 + 25

Reorder the terms:
25 + 10x + x2 = 113.097 + 25

Combine like terms: 113.097 + 25 = 138.097
25 + 10x + x2 = 138.097

Factor a perfect square on the left side:
(x + 5)(x + 5) = 138.097

Calculate the square root of the right side: 11.751467993

Break this problem into two subproblems by setting 
(x + 5) equal to 11.751467993 and -11.751467993.

Subproblem 1

x + 5 = 11.751467993 Simplifying x + 5 = 11.751467993 Reorder the terms: 5 + x = 11.751467993 Solving 5 + x = 11.751467993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 11.751467993 + -5 Combine like terms: 5 + -5 = 0 0 + x = 11.751467993 + -5 x = 11.751467993 + -5 Combine like terms: 11.751467993 + -5 = 6.751467993 x = 6.751467993 Simplifying x = 6.751467993

Subproblem 2

x + 5 = -11.751467993 Simplifying x + 5 = -11.751467993 Reorder the terms: 5 + x = -11.751467993 Solving 5 + x = -11.751467993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -11.751467993 + -5 Combine like terms: 5 + -5 = 0 0 + x = -11.751467993 + -5 x = -11.751467993 + -5 Combine like terms: -11.751467993 + -5 = -16.751467993 x = -16.751467993 Simplifying x = -16.751467993

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.751467993, -16.751467993}

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