(2x-7)(x-11)=3

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Solution for (2x-7)(x-11)=3 equation:


Simplifying
(2x + -7)(x + -11) = 3

Reorder the terms:
(-7 + 2x)(x + -11) = 3

Reorder the terms:
(-7 + 2x)(-11 + x) = 3

Multiply (-7 + 2x) * (-11 + x)
(-7(-11 + x) + 2x * (-11 + x)) = 3
((-11 * -7 + x * -7) + 2x * (-11 + x)) = 3
((77 + -7x) + 2x * (-11 + x)) = 3
(77 + -7x + (-11 * 2x + x * 2x)) = 3
(77 + -7x + (-22x + 2x2)) = 3

Combine like terms: -7x + -22x = -29x
(77 + -29x + 2x2) = 3

Solving
77 + -29x + 2x2 = 3

Solving for variable 'x'.

Reorder the terms:
77 + -3 + -29x + 2x2 = 3 + -3

Combine like terms: 77 + -3 = 74
74 + -29x + 2x2 = 3 + -3

Combine like terms: 3 + -3 = 0
74 + -29x + 2x2 = 0

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

Divide each side by '2'.
37 + -14.5x + x2 = 0

Move the constant term to the right:

Add '-37' to each side of the equation.
37 + -14.5x + -37 + x2 = 0 + -37

Reorder the terms:
37 + -37 + -14.5x + x2 = 0 + -37

Combine like terms: 37 + -37 = 0
0 + -14.5x + x2 = 0 + -37
-14.5x + x2 = 0 + -37

Combine like terms: 0 + -37 = -37
-14.5x + x2 = -37

The x term is -14.5x.  Take half its coefficient (-7.25).
Square it (52.5625) and add it to both sides.

Add '52.5625' to each side of the equation.
-14.5x + 52.5625 + x2 = -37 + 52.5625

Reorder the terms:
52.5625 + -14.5x + x2 = -37 + 52.5625

Combine like terms: -37 + 52.5625 = 15.5625
52.5625 + -14.5x + x2 = 15.5625

Factor a perfect square on the left side:
(x + -7.25)(x + -7.25) = 15.5625

Calculate the square root of the right side: 3.94493346

Break this problem into two subproblems by setting 
(x + -7.25) equal to 3.94493346 and -3.94493346.

Subproblem 1

x + -7.25 = 3.94493346 Simplifying x + -7.25 = 3.94493346 Reorder the terms: -7.25 + x = 3.94493346 Solving -7.25 + x = 3.94493346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.25' to each side of the equation. -7.25 + 7.25 + x = 3.94493346 + 7.25 Combine like terms: -7.25 + 7.25 = 0.00 0.00 + x = 3.94493346 + 7.25 x = 3.94493346 + 7.25 Combine like terms: 3.94493346 + 7.25 = 11.19493346 x = 11.19493346 Simplifying x = 11.19493346

Subproblem 2

x + -7.25 = -3.94493346 Simplifying x + -7.25 = -3.94493346 Reorder the terms: -7.25 + x = -3.94493346 Solving -7.25 + x = -3.94493346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.25' to each side of the equation. -7.25 + 7.25 + x = -3.94493346 + 7.25 Combine like terms: -7.25 + 7.25 = 0.00 0.00 + x = -3.94493346 + 7.25 x = -3.94493346 + 7.25 Combine like terms: -3.94493346 + 7.25 = 3.30506654 x = 3.30506654 Simplifying x = 3.30506654

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.19493346, 3.30506654}

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