x*-10(x-1)=-11

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Solution for x*-10(x-1)=-11 equation:


Simplifying
x * -10(x + -1) = -11

Reorder the terms:
x * -10(-1 + x) = -11

Reorder the terms for easier multiplication:
-10x(-1 + x) = -11
(-1 * -10x + x * -10x) = -11
(10x + -10x2) = -11

Solving
10x + -10x2 = -11

Solving for variable 'x'.

Reorder the terms:
11 + 10x + -10x2 = -11 + 11

Combine like terms: -11 + 11 = 0
11 + 10x + -10x2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
-1.1 + -1x + x2 = 0

Move the constant term to the right:

Add '1.1' to each side of the equation.
-1.1 + -1x + 1.1 + x2 = 0 + 1.1

Reorder the terms:
-1.1 + 1.1 + -1x + x2 = 0 + 1.1

Combine like terms: -1.1 + 1.1 = 0.0
0.0 + -1x + x2 = 0 + 1.1
-1x + x2 = 0 + 1.1

Combine like terms: 0 + 1.1 = 1.1
-1x + x2 = 1.1

The x term is -1x.  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.
-1x + 0.25 + x2 = 1.1 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 1.1 + 0.25

Combine like terms: 1.1 + 0.25 = 1.35
0.25 + -1x + x2 = 1.35

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1.35

Calculate the square root of the right side: 1.161895004

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.161895004 and -1.161895004.

Subproblem 1

x + -0.5 = 1.161895004 Simplifying x + -0.5 = 1.161895004 Reorder the terms: -0.5 + x = 1.161895004 Solving -0.5 + x = 1.161895004 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 = 1.161895004 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.161895004 + 0.5 x = 1.161895004 + 0.5 Combine like terms: 1.161895004 + 0.5 = 1.661895004 x = 1.661895004 Simplifying x = 1.661895004

Subproblem 2

x + -0.5 = -1.161895004 Simplifying x + -0.5 = -1.161895004 Reorder the terms: -0.5 + x = -1.161895004 Solving -0.5 + x = -1.161895004 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 = -1.161895004 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.161895004 + 0.5 x = -1.161895004 + 0.5 Combine like terms: -1.161895004 + 0.5 = -0.661895004 x = -0.661895004 Simplifying x = -0.661895004

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.661895004, -0.661895004}

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