20x-(2x-1)2=29-2x(2x+3)

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Solution for 20x-(2x-1)2=29-2x(2x+3) equation:


Simplifying
20x + -1(2x + -1) * 2 = 29 + -2x(2x + 3)

Reorder the terms:
20x + -1(-1 + 2x) * 2 = 29 + -2x(2x + 3)

Reorder the terms for easier multiplication:
20x + -1 * 2(-1 + 2x) = 29 + -2x(2x + 3)

Multiply -1 * 2
20x + -2(-1 + 2x) = 29 + -2x(2x + 3)
20x + (-1 * -2 + 2x * -2) = 29 + -2x(2x + 3)
20x + (2 + -4x) = 29 + -2x(2x + 3)

Reorder the terms:
2 + 20x + -4x = 29 + -2x(2x + 3)

Combine like terms: 20x + -4x = 16x
2 + 16x = 29 + -2x(2x + 3)

Reorder the terms:
2 + 16x = 29 + -2x(3 + 2x)
2 + 16x = 29 + (3 * -2x + 2x * -2x)
2 + 16x = 29 + (-6x + -4x2)

Solving
2 + 16x = 29 + -6x + -4x2

Solving for variable 'x'.

Reorder the terms:
2 + -29 + 16x + 6x + 4x2 = 29 + -6x + -4x2 + -29 + 6x + 4x2

Combine like terms: 2 + -29 = -27
-27 + 16x + 6x + 4x2 = 29 + -6x + -4x2 + -29 + 6x + 4x2

Combine like terms: 16x + 6x = 22x
-27 + 22x + 4x2 = 29 + -6x + -4x2 + -29 + 6x + 4x2

Reorder the terms:
-27 + 22x + 4x2 = 29 + -29 + -6x + 6x + -4x2 + 4x2

Combine like terms: 29 + -29 = 0
-27 + 22x + 4x2 = 0 + -6x + 6x + -4x2 + 4x2
-27 + 22x + 4x2 = -6x + 6x + -4x2 + 4x2

Combine like terms: -6x + 6x = 0
-27 + 22x + 4x2 = 0 + -4x2 + 4x2
-27 + 22x + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-27 + 22x + 4x2 = 0

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

Divide each side by '4'.
-6.75 + 5.5x + x2 = 0

Move the constant term to the right:

Add '6.75' to each side of the equation.
-6.75 + 5.5x + 6.75 + x2 = 0 + 6.75

Reorder the terms:
-6.75 + 6.75 + 5.5x + x2 = 0 + 6.75

Combine like terms: -6.75 + 6.75 = 0.00
0.00 + 5.5x + x2 = 0 + 6.75
5.5x + x2 = 0 + 6.75

Combine like terms: 0 + 6.75 = 6.75
5.5x + x2 = 6.75

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 = 6.75 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = 6.75 + 7.5625

Combine like terms: 6.75 + 7.5625 = 14.3125
7.5625 + 5.5x + x2 = 14.3125

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 14.3125

Calculate the square root of the right side: 3.783186488

Break this problem into two subproblems by setting 
(x + 2.75) equal to 3.783186488 and -3.783186488.

Subproblem 1

x + 2.75 = 3.783186488 Simplifying x + 2.75 = 3.783186488 Reorder the terms: 2.75 + x = 3.783186488 Solving 2.75 + x = 3.783186488 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 = 3.783186488 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 3.783186488 + -2.75 x = 3.783186488 + -2.75 Combine like terms: 3.783186488 + -2.75 = 1.033186488 x = 1.033186488 Simplifying x = 1.033186488

Subproblem 2

x + 2.75 = -3.783186488 Simplifying x + 2.75 = -3.783186488 Reorder the terms: 2.75 + x = -3.783186488 Solving 2.75 + x = -3.783186488 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 = -3.783186488 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -3.783186488 + -2.75 x = -3.783186488 + -2.75 Combine like terms: -3.783186488 + -2.75 = -6.533186488 x = -6.533186488 Simplifying x = -6.533186488

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.033186488, -6.533186488}

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