(10x-27)*1.1x=200

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Solution for (10x-27)*1.1x=200 equation:


Simplifying
(10x + -27) * 1.1x = 200

Reorder the terms:
(-27 + 10x) * 1.1x = 200

Reorder the terms for easier multiplication:
1.1x(-27 + 10x) = 200
(-27 * 1.1x + 10x * 1.1x) = 200
(-29.7x + 11x2) = 200

Solving
-29.7x + 11x2 = 200

Solving for variable 'x'.

Reorder the terms:
-200 + -29.7x + 11x2 = 200 + -200

Combine like terms: 200 + -200 = 0
-200 + -29.7x + 11x2 = 0

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

Divide each side by '11'.
-18.18181818 + -2.7x + x2 = 0

Move the constant term to the right:

Add '18.18181818' to each side of the equation.
-18.18181818 + -2.7x + 18.18181818 + x2 = 0 + 18.18181818

Reorder the terms:
-18.18181818 + 18.18181818 + -2.7x + x2 = 0 + 18.18181818

Combine like terms: -18.18181818 + 18.18181818 = 0.00000000
0.00000000 + -2.7x + x2 = 0 + 18.18181818
-2.7x + x2 = 0 + 18.18181818

Combine like terms: 0 + 18.18181818 = 18.18181818
-2.7x + x2 = 18.18181818

The x term is -2.7x.  Take half its coefficient (-1.35).
Square it (1.8225) and add it to both sides.

Add '1.8225' to each side of the equation.
-2.7x + 1.8225 + x2 = 18.18181818 + 1.8225

Reorder the terms:
1.8225 + -2.7x + x2 = 18.18181818 + 1.8225

Combine like terms: 18.18181818 + 1.8225 = 20.00431818
1.8225 + -2.7x + x2 = 20.00431818

Factor a perfect square on the left side:
(x + -1.35)(x + -1.35) = 20.00431818

Calculate the square root of the right side: 4.472618716

Break this problem into two subproblems by setting 
(x + -1.35) equal to 4.472618716 and -4.472618716.

Subproblem 1

x + -1.35 = 4.472618716 Simplifying x + -1.35 = 4.472618716 Reorder the terms: -1.35 + x = 4.472618716 Solving -1.35 + x = 4.472618716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.35' to each side of the equation. -1.35 + 1.35 + x = 4.472618716 + 1.35 Combine like terms: -1.35 + 1.35 = 0.00 0.00 + x = 4.472618716 + 1.35 x = 4.472618716 + 1.35 Combine like terms: 4.472618716 + 1.35 = 5.822618716 x = 5.822618716 Simplifying x = 5.822618716

Subproblem 2

x + -1.35 = -4.472618716 Simplifying x + -1.35 = -4.472618716 Reorder the terms: -1.35 + x = -4.472618716 Solving -1.35 + x = -4.472618716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.35' to each side of the equation. -1.35 + 1.35 + x = -4.472618716 + 1.35 Combine like terms: -1.35 + 1.35 = 0.00 0.00 + x = -4.472618716 + 1.35 x = -4.472618716 + 1.35 Combine like terms: -4.472618716 + 1.35 = -3.122618716 x = -3.122618716 Simplifying x = -3.122618716

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.822618716, -3.122618716}

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