(2x-1)(5x-1)-14x=0

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Solution for (2x-1)(5x-1)-14x=0 equation:


Simplifying
(2x + -1)(5x + -1) + -14x = 0

Reorder the terms:
(-1 + 2x)(5x + -1) + -14x = 0

Reorder the terms:
(-1 + 2x)(-1 + 5x) + -14x = 0

Multiply (-1 + 2x) * (-1 + 5x)
(-1(-1 + 5x) + 2x * (-1 + 5x)) + -14x = 0
((-1 * -1 + 5x * -1) + 2x * (-1 + 5x)) + -14x = 0
((1 + -5x) + 2x * (-1 + 5x)) + -14x = 0
(1 + -5x + (-1 * 2x + 5x * 2x)) + -14x = 0
(1 + -5x + (-2x + 10x2)) + -14x = 0

Combine like terms: -5x + -2x = -7x
(1 + -7x + 10x2) + -14x = 0

Reorder the terms:
1 + -7x + -14x + 10x2 = 0

Combine like terms: -7x + -14x = -21x
1 + -21x + 10x2 = 0

Solving
1 + -21x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
0.1 + -2.1x + x2 = 0.0

Move the constant term to the right:

Add '-0.1' to each side of the equation.
0.1 + -2.1x + -0.1 + x2 = 0.0 + -0.1

Reorder the terms:
0.1 + -0.1 + -2.1x + x2 = 0.0 + -0.1

Combine like terms: 0.1 + -0.1 = 0.0
0.0 + -2.1x + x2 = 0.0 + -0.1
-2.1x + x2 = 0.0 + -0.1

Combine like terms: 0.0 + -0.1 = -0.1
-2.1x + x2 = -0.1

The x term is -2.1x.  Take half its coefficient (-1.05).
Square it (1.1025) and add it to both sides.

Add '1.1025' to each side of the equation.
-2.1x + 1.1025 + x2 = -0.1 + 1.1025

Reorder the terms:
1.1025 + -2.1x + x2 = -0.1 + 1.1025

Combine like terms: -0.1 + 1.1025 = 1.0025
1.1025 + -2.1x + x2 = 1.0025

Factor a perfect square on the left side:
(x + -1.05)(x + -1.05) = 1.0025

Calculate the square root of the right side: 1.00124922

Break this problem into two subproblems by setting 
(x + -1.05) equal to 1.00124922 and -1.00124922.

Subproblem 1

x + -1.05 = 1.00124922 Simplifying x + -1.05 = 1.00124922 Reorder the terms: -1.05 + x = 1.00124922 Solving -1.05 + x = 1.00124922 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.05' to each side of the equation. -1.05 + 1.05 + x = 1.00124922 + 1.05 Combine like terms: -1.05 + 1.05 = 0.00 0.00 + x = 1.00124922 + 1.05 x = 1.00124922 + 1.05 Combine like terms: 1.00124922 + 1.05 = 2.05124922 x = 2.05124922 Simplifying x = 2.05124922

Subproblem 2

x + -1.05 = -1.00124922 Simplifying x + -1.05 = -1.00124922 Reorder the terms: -1.05 + x = -1.00124922 Solving -1.05 + x = -1.00124922 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.05' to each side of the equation. -1.05 + 1.05 + x = -1.00124922 + 1.05 Combine like terms: -1.05 + 1.05 = 0.00 0.00 + x = -1.00124922 + 1.05 x = -1.00124922 + 1.05 Combine like terms: -1.00124922 + 1.05 = 0.04875078 x = 0.04875078 Simplifying x = 0.04875078

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.05124922, 0.04875078}

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