(2x-9)(x-1)-2=0

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Solution for (2x-9)(x-1)-2=0 equation:


Simplifying
(2x + -9)(x + -1) + -2 = 0

Reorder the terms:
(-9 + 2x)(x + -1) + -2 = 0

Reorder the terms:
(-9 + 2x)(-1 + x) + -2 = 0

Multiply (-9 + 2x) * (-1 + x)
(-9(-1 + x) + 2x * (-1 + x)) + -2 = 0
((-1 * -9 + x * -9) + 2x * (-1 + x)) + -2 = 0
((9 + -9x) + 2x * (-1 + x)) + -2 = 0
(9 + -9x + (-1 * 2x + x * 2x)) + -2 = 0
(9 + -9x + (-2x + 2x2)) + -2 = 0

Combine like terms: -9x + -2x = -11x
(9 + -11x + 2x2) + -2 = 0

Reorder the terms:
9 + -2 + -11x + 2x2 = 0

Combine like terms: 9 + -2 = 7
7 + -11x + 2x2 = 0

Solving
7 + -11x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
3.5 + -5.5x + x2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + -5.5x + -3.5 + x2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + -5.5x + x2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -5.5x + x2 = 0 + -3.5
-5.5x + x2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-5.5x + x2 = -3.5

The x term is -5.5x.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5x + 7.5625 + x2 = -3.5 + 7.5625

Reorder the terms:
7.5625 + -5.5x + x2 = -3.5 + 7.5625

Combine like terms: -3.5 + 7.5625 = 4.0625
7.5625 + -5.5x + x2 = 4.0625

Factor a perfect square on the left side:
(x + -2.75)(x + -2.75) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(x + -2.75) equal to 2.015564437 and -2.015564437.

Subproblem 1

x + -2.75 = 2.015564437 Simplifying x + -2.75 = 2.015564437 Reorder the terms: -2.75 + x = 2.015564437 Solving -2.75 + x = 2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = 2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = 2.015564437 + 2.75 x = 2.015564437 + 2.75 Combine like terms: 2.015564437 + 2.75 = 4.765564437 x = 4.765564437 Simplifying x = 4.765564437

Subproblem 2

x + -2.75 = -2.015564437 Simplifying x + -2.75 = -2.015564437 Reorder the terms: -2.75 + x = -2.015564437 Solving -2.75 + x = -2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = -2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = -2.015564437 + 2.75 x = -2.015564437 + 2.75 Combine like terms: -2.015564437 + 2.75 = 0.734435563 x = 0.734435563 Simplifying x = 0.734435563

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.765564437, 0.734435563}

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