1.12=x(1+x)

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Solution for 1.12=x(1+x) equation:


Simplifying
1.12 = x(1 + x)
1.12 = (1 * x + x * x)
1.12 = (1x + x2)

Solving
1.12 = 1x + x2

Solving for variable 'x'.

Reorder the terms:
1.12 + -1x + -1x2 = 1x + -1x + x2 + -1x2

Combine like terms: 1x + -1x = 0
1.12 + -1x + -1x2 = 0 + x2 + -1x2
1.12 + -1x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
1.12 + -1x + -1x2 = 0

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

Divide each side by '-1'.
-1.12 + x + x2 = 0

Move the constant term to the right:

Add '1.12' to each side of the equation.
-1.12 + x + 1.12 + x2 = 0 + 1.12

Reorder the terms:
-1.12 + 1.12 + x + x2 = 0 + 1.12

Combine like terms: -1.12 + 1.12 = 0.00
0.00 + x + x2 = 0 + 1.12
x + x2 = 0 + 1.12

Combine like terms: 0 + 1.12 = 1.12
x + x2 = 1.12

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 1.12 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 1.12 + 0.25

Combine like terms: 1.12 + 0.25 = 1.37
1.25 + x2 = 1.37

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1.37

Calculate the square root of the right side: 1.170469991

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.170469991 and -1.170469991.

Subproblem 1

x + 0.5 = 1.170469991 Simplifying x + 0.5 = 1.170469991 Reorder the terms: 0.5 + x = 1.170469991 Solving 0.5 + x = 1.170469991 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.170469991 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.170469991 + -0.5 x = 1.170469991 + -0.5 Combine like terms: 1.170469991 + -0.5 = 0.670469991 x = 0.670469991 Simplifying x = 0.670469991

Subproblem 2

x + 0.5 = -1.170469991 Simplifying x + 0.5 = -1.170469991 Reorder the terms: 0.5 + x = -1.170469991 Solving 0.5 + x = -1.170469991 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.170469991 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.170469991 + -0.5 x = -1.170469991 + -0.5 Combine like terms: -1.170469991 + -0.5 = -1.670469991 x = -1.670469991 Simplifying x = -1.670469991

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.670469991, -1.670469991}

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