0=4d^2+6d-3

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Solution for 0=4d^2+6d-3 equation:


Simplifying
0 = 4d2 + 6d + -3

Reorder the terms:
0 = -3 + 6d + 4d2

Solving
0 = -3 + 6d + 4d2

Solving for variable 'd'.

Combine like terms: 0 + 3 = 3
3 + -6d + -4d2 = -3 + 6d + 4d2 + 3 + -6d + -4d2

Reorder the terms:
3 + -6d + -4d2 = -3 + 3 + 6d + -6d + 4d2 + -4d2

Combine like terms: -3 + 3 = 0
3 + -6d + -4d2 = 0 + 6d + -6d + 4d2 + -4d2
3 + -6d + -4d2 = 6d + -6d + 4d2 + -4d2

Combine like terms: 6d + -6d = 0
3 + -6d + -4d2 = 0 + 4d2 + -4d2
3 + -6d + -4d2 = 4d2 + -4d2

Combine like terms: 4d2 + -4d2 = 0
3 + -6d + -4d2 = 0

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

Divide each side by '-4'.
-0.75 + 1.5d + d2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + 1.5d + 0.75 + d2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + 1.5d + d2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + 1.5d + d2 = 0 + 0.75
1.5d + d2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
1.5d + d2 = 0.75

The d term is 1.5d.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5d + 0.5625 + d2 = 0.75 + 0.5625

Reorder the terms:
0.5625 + 1.5d + d2 = 0.75 + 0.5625

Combine like terms: 0.75 + 0.5625 = 1.3125
0.5625 + 1.5d + d2 = 1.3125

Factor a perfect square on the left side:
(d + 0.75)(d + 0.75) = 1.3125

Calculate the square root of the right side: 1.145643924

Break this problem into two subproblems by setting 
(d + 0.75) equal to 1.145643924 and -1.145643924.

Subproblem 1

d + 0.75 = 1.145643924 Simplifying d + 0.75 = 1.145643924 Reorder the terms: 0.75 + d = 1.145643924 Solving 0.75 + d = 1.145643924 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + d = 1.145643924 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + d = 1.145643924 + -0.75 d = 1.145643924 + -0.75 Combine like terms: 1.145643924 + -0.75 = 0.395643924 d = 0.395643924 Simplifying d = 0.395643924

Subproblem 2

d + 0.75 = -1.145643924 Simplifying d + 0.75 = -1.145643924 Reorder the terms: 0.75 + d = -1.145643924 Solving 0.75 + d = -1.145643924 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + d = -1.145643924 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + d = -1.145643924 + -0.75 d = -1.145643924 + -0.75 Combine like terms: -1.145643924 + -0.75 = -1.895643924 d = -1.895643924 Simplifying d = -1.895643924

Solution

The solution to the problem is based on the solutions from the subproblems. d = {0.395643924, -1.895643924}

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