(4d+3)(d-1)=(2d-1)*2+2

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Solution for (4d+3)(d-1)=(2d-1)*2+2 equation:


Simplifying
(4d + 3)(d + -1) = (2d + -1) * 2 + 2

Reorder the terms:
(3 + 4d)(d + -1) = (2d + -1) * 2 + 2

Reorder the terms:
(3 + 4d)(-1 + d) = (2d + -1) * 2 + 2

Multiply (3 + 4d) * (-1 + d)
(3(-1 + d) + 4d * (-1 + d)) = (2d + -1) * 2 + 2
((-1 * 3 + d * 3) + 4d * (-1 + d)) = (2d + -1) * 2 + 2
((-3 + 3d) + 4d * (-1 + d)) = (2d + -1) * 2 + 2
(-3 + 3d + (-1 * 4d + d * 4d)) = (2d + -1) * 2 + 2
(-3 + 3d + (-4d + 4d2)) = (2d + -1) * 2 + 2

Combine like terms: 3d + -4d = -1d
(-3 + -1d + 4d2) = (2d + -1) * 2 + 2

Reorder the terms:
-3 + -1d + 4d2 = (-1 + 2d) * 2 + 2

Reorder the terms for easier multiplication:
-3 + -1d + 4d2 = 2(-1 + 2d) + 2
-3 + -1d + 4d2 = (-1 * 2 + 2d * 2) + 2
-3 + -1d + 4d2 = (-2 + 4d) + 2

Reorder the terms:
-3 + -1d + 4d2 = -2 + 2 + 4d

Combine like terms: -2 + 2 = 0
-3 + -1d + 4d2 = 0 + 4d
-3 + -1d + 4d2 = 4d

Solving
-3 + -1d + 4d2 = 4d

Solving for variable 'd'.

Reorder the terms:
-3 + -1d + -4d + 4d2 = 4d + -4d

Combine like terms: -1d + -4d = -5d
-3 + -5d + 4d2 = 4d + -4d

Combine like terms: 4d + -4d = 0
-3 + -5d + 4d2 = 0

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

Divide each side by '4'.
-0.75 + -1.25d + d2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -1.25d + 0.75 + d2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -1.25d + d2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -1.25d + d2 = 0 + 0.75
-1.25d + d2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-1.25d + d2 = 0.75

The d term is -1.25d.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25d + 0.390625 + d2 = 0.75 + 0.390625

Reorder the terms:
0.390625 + -1.25d + d2 = 0.75 + 0.390625

Combine like terms: 0.75 + 0.390625 = 1.140625
0.390625 + -1.25d + d2 = 1.140625

Factor a perfect square on the left side:
(d + -0.625)(d + -0.625) = 1.140625

Calculate the square root of the right side: 1.068000468

Break this problem into two subproblems by setting 
(d + -0.625) equal to 1.068000468 and -1.068000468.

Subproblem 1

d + -0.625 = 1.068000468 Simplifying d + -0.625 = 1.068000468 Reorder the terms: -0.625 + d = 1.068000468 Solving -0.625 + d = 1.068000468 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + d = 1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + d = 1.068000468 + 0.625 d = 1.068000468 + 0.625 Combine like terms: 1.068000468 + 0.625 = 1.693000468 d = 1.693000468 Simplifying d = 1.693000468

Subproblem 2

d + -0.625 = -1.068000468 Simplifying d + -0.625 = -1.068000468 Reorder the terms: -0.625 + d = -1.068000468 Solving -0.625 + d = -1.068000468 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + d = -1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + d = -1.068000468 + 0.625 d = -1.068000468 + 0.625 Combine like terms: -1.068000468 + 0.625 = -0.443000468 d = -0.443000468 Simplifying d = -0.443000468

Solution

The solution to the problem is based on the solutions from the subproblems. d = {1.693000468, -0.443000468}

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