2x(2x)=13x+1

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Solution for 2x(2x)=13x+1 equation:


Simplifying
2x(2x) = 13x + 1

Remove parenthesis around (2x)
2x * 2x = 13x + 1

Reorder the terms for easier multiplication:
2 * 2x * x = 13x + 1

Multiply 2 * 2
4x * x = 13x + 1

Multiply x * x
4x2 = 13x + 1

Reorder the terms:
4x2 = 1 + 13x

Solving
4x2 = 1 + 13x

Solving for variable 'x'.

Reorder the terms:
-1 + -13x + 4x2 = 1 + 13x + -1 + -13x

Reorder the terms:
-1 + -13x + 4x2 = 1 + -1 + 13x + -13x

Combine like terms: 1 + -1 = 0
-1 + -13x + 4x2 = 0 + 13x + -13x
-1 + -13x + 4x2 = 13x + -13x

Combine like terms: 13x + -13x = 0
-1 + -13x + 4x2 = 0

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

Divide each side by '4'.
-0.25 + -3.25x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -3.25x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -3.25x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -3.25x + x2 = 0 + 0.25
-3.25x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-3.25x + x2 = 0.25

The x term is -3.25x.  Take half its coefficient (-1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
-3.25x + 2.640625 + x2 = 0.25 + 2.640625

Reorder the terms:
2.640625 + -3.25x + x2 = 0.25 + 2.640625

Combine like terms: 0.25 + 2.640625 = 2.890625
2.640625 + -3.25x + x2 = 2.890625

Factor a perfect square on the left side:
(x + -1.625)(x + -1.625) = 2.890625

Calculate the square root of the right side: 1.700183814

Break this problem into two subproblems by setting 
(x + -1.625) equal to 1.700183814 and -1.700183814.

Subproblem 1

x + -1.625 = 1.700183814 Simplifying x + -1.625 = 1.700183814 Reorder the terms: -1.625 + x = 1.700183814 Solving -1.625 + x = 1.700183814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.625' to each side of the equation. -1.625 + 1.625 + x = 1.700183814 + 1.625 Combine like terms: -1.625 + 1.625 = 0.000 0.000 + x = 1.700183814 + 1.625 x = 1.700183814 + 1.625 Combine like terms: 1.700183814 + 1.625 = 3.325183814 x = 3.325183814 Simplifying x = 3.325183814

Subproblem 2

x + -1.625 = -1.700183814 Simplifying x + -1.625 = -1.700183814 Reorder the terms: -1.625 + x = -1.700183814 Solving -1.625 + x = -1.700183814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.625' to each side of the equation. -1.625 + 1.625 + x = -1.700183814 + 1.625 Combine like terms: -1.625 + 1.625 = 0.000 0.000 + x = -1.700183814 + 1.625 x = -1.700183814 + 1.625 Combine like terms: -1.700183814 + 1.625 = -0.075183814 x = -0.075183814 Simplifying x = -0.075183814

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.325183814, -0.075183814}

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