-11x(x-2)=-8x-8

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Solution for -11x(x-2)=-8x-8 equation:


Simplifying
-11x(x + -2) = -8x + -8

Reorder the terms:
-11x(-2 + x) = -8x + -8
(-2 * -11x + x * -11x) = -8x + -8
(22x + -11x2) = -8x + -8

Reorder the terms:
22x + -11x2 = -8 + -8x

Solving
22x + -11x2 = -8 + -8x

Solving for variable 'x'.

Reorder the terms:
8 + 22x + 8x + -11x2 = -8 + -8x + 8 + 8x

Combine like terms: 22x + 8x = 30x
8 + 30x + -11x2 = -8 + -8x + 8 + 8x

Reorder the terms:
8 + 30x + -11x2 = -8 + 8 + -8x + 8x

Combine like terms: -8 + 8 = 0
8 + 30x + -11x2 = 0 + -8x + 8x
8 + 30x + -11x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
8 + 30x + -11x2 = 0

Begin completing the square.  Divide all terms by
-11 the coefficient of the squared term: 

Divide each side by '-11'.
-0.7272727273 + -2.727272727x + x2 = 0

Move the constant term to the right:

Add '0.7272727273' to each side of the equation.
-0.7272727273 + -2.727272727x + 0.7272727273 + x2 = 0 + 0.7272727273

Reorder the terms:
-0.7272727273 + 0.7272727273 + -2.727272727x + x2 = 0 + 0.7272727273

Combine like terms: -0.7272727273 + 0.7272727273 = 0.0000000000
0.0000000000 + -2.727272727x + x2 = 0 + 0.7272727273
-2.727272727x + x2 = 0 + 0.7272727273

Combine like terms: 0 + 0.7272727273 = 0.7272727273
-2.727272727x + x2 = 0.7272727273

The x term is -2.727272727x.  Take half its coefficient (-1.363636364).
Square it (1.859504133) and add it to both sides.

Add '1.859504133' to each side of the equation.
-2.727272727x + 1.859504133 + x2 = 0.7272727273 + 1.859504133

Reorder the terms:
1.859504133 + -2.727272727x + x2 = 0.7272727273 + 1.859504133

Combine like terms: 0.7272727273 + 1.859504133 = 2.5867768603
1.859504133 + -2.727272727x + x2 = 2.5867768603

Factor a perfect square on the left side:
(x + -1.363636364)(x + -1.363636364) = 2.5867768603

Calculate the square root of the right side: 1.608346001

Break this problem into two subproblems by setting 
(x + -1.363636364) equal to 1.608346001 and -1.608346001.

Subproblem 1

x + -1.363636364 = 1.608346001 Simplifying x + -1.363636364 = 1.608346001 Reorder the terms: -1.363636364 + x = 1.608346001 Solving -1.363636364 + x = 1.608346001 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.363636364' to each side of the equation. -1.363636364 + 1.363636364 + x = 1.608346001 + 1.363636364 Combine like terms: -1.363636364 + 1.363636364 = 0.000000000 0.000000000 + x = 1.608346001 + 1.363636364 x = 1.608346001 + 1.363636364 Combine like terms: 1.608346001 + 1.363636364 = 2.971982365 x = 2.971982365 Simplifying x = 2.971982365

Subproblem 2

x + -1.363636364 = -1.608346001 Simplifying x + -1.363636364 = -1.608346001 Reorder the terms: -1.363636364 + x = -1.608346001 Solving -1.363636364 + x = -1.608346001 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.363636364' to each side of the equation. -1.363636364 + 1.363636364 + x = -1.608346001 + 1.363636364 Combine like terms: -1.363636364 + 1.363636364 = 0.000000000 0.000000000 + x = -1.608346001 + 1.363636364 x = -1.608346001 + 1.363636364 Combine like terms: -1.608346001 + 1.363636364 = -0.244709637 x = -0.244709637 Simplifying x = -0.244709637

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.971982365, -0.244709637}

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